Explain how homologous structures are used as a source of evidence to infer evolutionary relationships between modern and fossil organisms

Answers

Answer 1

Answer:

Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations.

Explanation:

Answer 2

Analogous structures demonstrate that identical selective pressures might result in similar adaptations, whereas homologous structures indicate evidence for shared ancestry.

What are analogous structures?

In contrast to homologous structures, analogous structures are characteristics of different species that have evolved in response to a similar environmental challenge and are similar in function but not necessarily in structure.

While comparable structures demonstrate that similar selective pressures can result in similar adaptations, homologous structures suggest that they have a common ancestor (beneficial features).

Therefore, homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations.

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Related Questions

The lake ecosystem where this food chain takes place is hosting a new fishing tournament. It is expected to be the largest fishing tournament in the state. The goal is to catch as many bass as you can over a 3-day period. What would be the effect on the food chain due to the fishing tournament

Answers

Answer:

The sunfish population should grow

Explanation:

Cuz me smort

Write a title for each step of primary

succession

Answers

Answer:

The labels I-VII represent the different stages of primary succession. I-bare rocks, II-pioneers (mosses, lichen, algae, fungi), III-annual herbaceous plants, IV-perennial herbaceous plants and grasses, V-shrubs, VI-shade intolerant trees, VII-shade tolerant trees.

CAN SOMEONE WHO DID THE CELERY STALK OSMOSIS LAB ANSWER THESE QUESTIONS? 50 POINTS
1. What is osmosis?

2. Celery is composed of millions of plant cells. Do these cells contain any water?
Yes
3. Did the cut celery in step 8 & 9 show any color change that would indicate that the water did enter the celery cells?

4. If you placed the celery into a bottle of colored water that was 35% sugar, would the colored water be seen in the celery? Why or why not? (HINT: Drawing a diagram of this scenario may help – 35% sugar is a very concentrated solution…)

Answers

Answer:

1. Osmosis is the spontaneous net movement or diffusion of solvent molecules through a selectively permeable membrane from a region of high water potential to a region of low water potential, in the direction that tends to equalize the solute concentrations on the two sides. 

2. Plants obtain water through their roots. Water present in the soil (or air, in the case of air plants) enters the plant through the epidermis of the root. The epidermis is a very thin single layer of cells. The water passes through the membranes of plant cells and also fills the spaces in between the cells.

3. This experiment allows you and your child to talk about the circulatory system and "capillary" action. The small "vessels" in the celery stalks carry the water and color to the leaves, like the way blood travels through your body.

4. A great way to introduce basic science concepts are through fun and visual experiments such as this Celery Experiment. It requires just a few items and is a fun way to teach children about how a plant absorbs water. This process is called Osmosis. We will learn about how plants absorb water using colored water and celery stalks.

Explanation:

Hope it's help

please do brainless :)

Which energy technology is more sustainable long term?

Answers

Answer:

Wind power

Harnessing power from the wind is one of the cleanest and most sustainable ways to generate electricity as it produces no toxic pollution or global warming emissions. Wind is also abundant, inexhaustible, and affordable, which makes it a viable and large-scale alternative to fossil fuels.

Explanation:

I hope it's help :)

Answer:

Wind power

Explanation:

getting power from the wind is one of the cleanest and most sustainable ways to generate electricity.

MITOSIS
Complete the sentences below by circling or filling in the correct words.
Mitosis is cell division of (germ, somatic) cells. The purpose of mitosis is to create new cells for
and
Mitosis produces four (different, identical) cells that are (diploid,
haploid)

Answers

Answer:

Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.

Explanation:

Involves one cell division?

Results in two daughter cells

Results in diploid? daughter cells? (chromosome? number remains the same as parent cell)

Daughter cells are genetically identical

Occurs in all organisms except viruses

Creates all body cells (somatic?) apart from the germ cells? (eggs and sperm)

Prophase is much shorter

No recombination/crossing over occurs in prophase.

 

In metaphase individual chromosomes (pairs of chromatids) line up along the equator.

During anaphase the sister chromatids are separated to opposite poles.

Give an example of how water acting as a solvent is important for living organisms.

Answers

Answer:Water acts as a solvent of carbon dioxide excreted from tissues, in blood and helps in regulating pH (because it forms carbonic acid that lowers pH when it tends to get higher). Blood pH should be maintained at about 7.4. One major reason is that the structure of protein is dependent ton pH because pH determines its ionization hence also affecting the charges and interaction between side groups of amino acids. A change in pH may, therefore, denature proteins and negatively affect cellular functions.

Explanation: i took biology

Answer:

water is important for the following reasons

Explanation:

for drinking

for bathing

for entertainment purpose

for irrigation

for hypower electricity

i hope you got answer

i got it through social

Describe the process of cell division in a plant cell.

Answers

Answer:

Cytokinesis in a plant cell: the cell plate forms down the middle of the cell, creating a new wall that partitions it in two. Cytokinesis, the division of the cytoplasm to form two new cells, overlaps with the final stages of mitosis.

Explanation:

what is the main function of integrins? PLS HELP ME I HAVE A MIDTERM TOMORROW!!!!

Answers

Answer:

Integrins regulate cellular growth, proliferation, migration, signaling and cytokine activation and release. They play an important role in cell proliferation and migration, aid tissue repair .

Explanation:

Integrity regulate cellular growth, proliferation, migration, signaling and cytokine activation and release. They play an important role in cell proliferation and migration, aid tissue repair .

Non examples of cell cycle

Answers

Viruses, virions, and viroids are all examples of non-cellular life.

which of these groups include organisms that are mostly closely related

Answers

Answer: the answer is D

Explanation:  do you have picture proof?

Match the digestive organ on the left with its function.

Answers

Answer:

pancreas: secretes digestive enzymes into the small intestine

esophagus: the place where peristalsis takes place

small intestine: area of the digestive tract where most nuturients are absorbed

stomach: area of the digestive tract that follows the esophagus

large intestine: area of the digestive tract where mostly water is absorbed

Explanation:

peristalsis: so the food can move down towards your stomach, independently of gravity

pancreas: helps your stomach become the ultimate weapon to destroy anything that gets in there with its enzymes

small intestine: it is really really long -> more time to absorb nutrients

large intestine: like a farm of bacteria, the most exotic things that somehow made it through all the way here are finally destroyed -> also, water absorbtion: your body wants to retain as much as possible, this is how and where stool formation takes place

Which statement is true of line graphs?
a. They are used for numerical data.
b. Each point represents a data pair.
c. Data is displayed from least to greatest.
d. They are used for categorical data.

Answers

Answer:

b

Explanation:

you can graph to see an increase or decrease of data

Answer:

b

Explanation:

during the process of transcription in a eukaryote

Answers

mRNA is produced which caries the sequence to produce proteins

A thick, brownish haze that forms when gases in the air react with sunlight

Answers

I think the answer is photochemical smog.

Hope this helped!

who was the first person to study the embryos of different species

Answers

Answer:

Aristotle

Explanation:

Aristotle was the first person to study the embryos of different species.

what is the main function of the mitochondria in a plant cell?

Answers

Answer:

Produce energy for the cell.

Explanation:

what is the highest temperature a human can survive

Answers

Answer:

The highest temperature a human can survive is 108.14 degree Fahrenheit or 42.3 degree Celsius

Explanation:

A higher temperature may denature proteins and cause irreparable damage to brain.

how are rat mice gerbils hamsters guinea pigs and chinchillas similar?​

Answers

They are all rodents. This means they probably belong to the same order which is rodentia.

What are three main ways that cells maintain control over division

Answers

Answer:

Well if cells didn't have any control over what they do, the cells in the different stages of mitosis could ignite a genetic mutation of DNA and how the cells could react to different forms of treatment.

Explanation:

Hope this helps.

Answer:

the growth and repair of tissues in multicellular animals,the formation of gametes for reproduction in multicellular animals. the reproduction of an entire unicellular organism,

Explanation:

civil society is a voluntary and self mobilized social group.how​

Answers

Answer:

xtp7rx

Explanation:

xrpuorzuxulxiufzlzud'udlpxiflzuduld' ilfcgxotcgochpchpvph hpckcgogcupcblckxph jv jx,"'lv lh glad

1) What is the scientific method?
A.) a way of cleaning the science lab before an experiment
B.) set of procedres used to create an accurate representation of the world
C.) a description of physical science
D.) making up your own conclusions

Answers

The answer to this question is B

How do Demetri's results show that digestive enzymes are crucial to maintaining homeostasis inside the body?

Answers

In addition to breaking down food so that the nutrients may be absorbed, enzymes also generate vitamins like biotin and vitamin K and protect the body from dangerous microorganisms.

What is homeostasis?

A biological system's ability to self-regulate and maintain stability while responding to shifting environmental factors is known as homeostasis.

The body needs a steady supply of nutrients from food that has been digested. They are crucial for maintaining health and carrying out bodily tasks. The body may absorb and use food that has been broken down by the digestive system.

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Which statement is true about the law of reflection?
The angle of reflected light is the same as the incoming angle of light.
The angle of reflected light distorts the image to appear larger or smaller.
The angle of reflected light is smaller than the incoming angle of light.
The angle of reflected light is larger than the incoming angle of light

Answers

Answer:

The law of reflection defines that upon reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray, with respect to the normal to the surface that is to a line perpendicular to the surface at the point of contact.

The reflected ray is always in the plane defined by the incident ray and the normal to the surface at the point of contact of the incident ray.

The images produced by plane mirrors and curved mirrors can be understood by the law of reflection.

Law of reflection is defined as:

The principle when the light rays falls on the smooth surface, the angle of reflection is equal to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface all lie in the same plane.

What is Reflection of Light?

The process through which light rays fall on the surface and gets bounced back is known as a reflection of light.

Explanation:

Answer: The angle of reflected light is the same as the incoming angle of light.

Explanation:

The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. The angle of reflection is equal to the angle of incidence.

What is the best way to deal with biodiversity hotspots?

Answers

The best way to deal with biodiversity hotspots is to focus on a limited area which would save the greatest number of species.
Conclude the best way to deal with biodiversity hot spots. Some biologists argue that focusing on a limited area would save the greatest number of species. other biologists argue that concentrating funding on saving species in hot spots does not address the problems that occur elsewhere.

which one of the following items would never appear on a cash budget? group of answer choices office salaries expense interest expense depreciation expense travel expense

Answers

Answer:

depreciation expense

Explanation:



What are the states of energy? List the Laws of Thermodynamics.

Answers

Answer:

The laws of thermodynamics define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium.

Explanation:



What are the states of energy? List the Laws of Thermodynamics.
Answer: The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. The second law of thermodynamics states that the entropy of any isolated system always increases.

Paragraph: Discuss the three laws of thermodynamics.
Key Points

The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system.
The second law of thermodynamics states that the entropy of any isolated system always increases.
The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero.
Terms

absolute zeroThe lowest temperature that is theoretically possible.
entropyA thermodynamic property that is the measure of a system’s thermal energy per unit of temperature that is unavailable for doing useful work.

System or Surroundings

In order to avoid confusion, scientists discuss thermodynamic values in reference to a system and its surroundings. Everything that is not a part of the system constitutes its surroundings. The system and surroundings are separated by a boundary. For example, if the system is one mole of a gas in a container, then the boundary is simply the inner wall of the container itself. Everything outside of the boundary is considered the surroundings, which would include the container itself.

The boundary must be clearly defined, so one can clearly say whether a given part of the world is in the system or in the surroundings. If matter is not able to pass across the boundary, then the system is said to be closed; otherwise, it is open. A closed system may still exchange energy with the surroundings unless the system is an isolated one, in which case neither matter nor energy can pass across the boundary.


A Thermodynamic SystemA diagram of a thermodynamic system
The First Law of Thermodynamics

The first law of thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. For example, turning on a light would seem to produce energy; however, it is electrical energy that is converted.

A way of expressing the first law of thermodynamics is that any change in the internal energy (∆E) of a system is given by the sum of the heat (q) that flows across its boundaries and the work (w) done on the system by the surroundings:

Δ
E
=
q
+
w
Δ
E
=
q
+
w

This law says that there are two kinds of processes, heat and work, that can lead to a change in the internal energy of a system. Since both heat and work can be measured and quantified, this is the same as saying that any change in the energy of a system must result in a corresponding change in the energy of the surroundings outside the system. In other words, energy cannot be created or destroyed. If heat flows into a system or the surroundings do work on it, the internal energy increases and the sign of q and w are positive. Conversely, heat flow out of the system or work done by the system (on the surroundings) will be at the expense of the internal energy, and q and w will therefore be negative.

The Second Law of Thermodynamics

The second law of thermodynamics says that the entropy of any isolated system always increases. Isolated systems spontaneously evolve towards thermal equilibrium—the state of maximum entropy of the system. More simply put: the entropy of the universe (the ultimate isolated system) only increases and never decreases.

A simple way to think of the second law of thermodynamics is that a room, if not cleaned and tidied, will invariably become more messy and disorderly with time – regardless of how careful one is to keep it clean. When the room is cleaned, its entropy decreases, but the effort to clean it has resulted in an increase in entropy outside the room that exceeds the entropy lost.

The Third Law of Thermodynamics

The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero. The entropy of a system at absolute zero is typically zero, and in all cases is determined only by the number of different ground states it has. Specifically, the entropy of a pure crystalline substance (perfect order) at absolute zero temperature is zero. This statement holds true if the perfect crystal has only one state with minimum energy.

5. What enzyme makes it less likely that DNA will be lost from telomeres during replication?​

Answers

Answer:

Telomearse

Explanation:

Menstrual cycle has four major phases; menstrual phase, follicular phase, ovulation phase and pregnancy phase true or false?​

Answers

Answer:

False

Explanation:

The four phases of the menstrual cycle are menstruation, the follicular phase, ovulation and the luteal phase.

1
The observation by Darwin that finches of different species on the Galápagos
Islands have many similar physical characteristics supports the conclusion that
these finches *
(1 Point)

A.all eat the same type of food.

B.originated from a common ancestor.

C.have the ability to interbreed.

D. acquired traits through use and disuse.

No links or bots please and thank you

Answers

Answer:

D

Explanation:

I think it was to do with beak lengths

Which population would most likely survive in a major environmental change?
A. G
B. F
C. H
D. J

Answers

Answer:

H

Explanation:

It has the most variation

Hope that helps

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