Answer:
- Punnett square:
H - h
H - HH (lethal) Hh (hairless)
h - Hh (hairless) hh (hairy)
- Cross: Hh × Hh (all genotypes are Hh)
- Genotypes of the P1 dogs: heterozygous (Hh)
- Genotypes of the F1 dogs: 1/3 hh; 2/3 Hh
- It is not possible to design a cross where all offspring are hairless because the H allele for hairless is lethal in homo-zygous condition (the maximum possible is 2/3 hairless individuals)
Explanation:
As you can see in the Punnett square above, the 1:2 ratio (i.e., 1/3 hairy and 2/3 hairless) is indicative that the hair phenotype is a single (monogenic) trait associated with a lethal allele (H allele). In this case, it should be impossible to design a true-breeding cross because the homo-zygous HH genotype is lethal. Alleles that cause the death of an organism are known as lethal alleles (in this case, the H allele). A recessive lethal allele is only lethal in the homo-zygous individuals, thereby heterozygous individuals survive and they may exhibit a normal/altered (non-lethal) phenotype.
What are two outcomes of this pairing that increases genetic variation
Answer:
It is the last option
Explanation:
Genetic drift is a change in the gene pool due to chance. Genetic drift increases as the
population decreases. What accounts for this relationship?
Answer:
c
Explanation:
what is uterus?
what is the function of it in human body
Answer:
Explanation:
The uterus is a hallow and flattened muscular organ that is the home to developing fetus.It is divide into three parts:fundus, body, and cervix.
Its functions are:
1.to regulate menstural cycle throughout the reproductive period.
2.to pass the sperms towards fallopian tubes for fertilization.
3.to provide site for embedding zygote.
4.to expel fetus through cervix at the time of birth.
Answer:
1. uterus is also known as the womb.
2.it helps to form a child (that is inside the womb) when the sperm is disposed inside the womb
You are a dietician. Your client wants to discuss an image he found online while trying to conduct his own research about healthy diets.
Answer:
....
Explanation:
heud
how do you think a new community begins in an area?
Answer:
community means an interacting group of various species in a common location. communities exist but new community can cause due to certain pressures either favored by the environment/nature or by humans/simply animals.
Undergoing pressures can can cause for selections such as,
-stabilizing selection
-directional selection
-disruptive selection
or may also occur due to mutations (naturally or manmade) that will further cause for a genetic drift so the nature/ the environment will help/ favor for the best fitting species to survive resulting for an evolution and will build up a new community.
In a college biology experiment, 50 mg of methane and 60 mg of sulfate are mixed in a closed container. What is the limiting reagent, and how much excess reagent remains when that species has been exhausted
Answer:
CH₄ is the excess reagent and SO₄²⁻ is the limiting reagent.
0.040 g
Explanation:
Step 1: Write the balanced reaction for the methane anaerobic oxidation
CH₄ + SO₄²⁻ ⇒ S²⁻ + CO₂ + 2 H₂O
Step 2: Establish the theoretical mass ratio between the reactants
According to the balanced equation, the theoretical mass ratio of CH₄ to SO₄²⁻ is 16.04:96.06 = 0.1670:1
Step 3: Establish the experimental mass ratio between the reactants
50 mg (0.050 g) of CH₄ react with 60 mg (0.060 g) of SO₄²⁻. The experimental mass ratio of CH₄ to SO₄²⁻ is 0.050:0.060 = 0.83:1
Comparing both mass ratios, we can deduce that CH₄ is the excess reagent and SO₄²⁻ is the limiting reagent.
Step 4: Calculate the mass excess of CH₄
The mass of CH₄ that reacts with 0.060 g of SO₄²⁻ is:
0.060 g SO₄²⁻ 16.04 g CH₄/96.06 g SO₄²⁻ = 0.010 g CH₄
The mass excess of CH₄ is:
0.050 g - 0.010 g = 0.040 g
Sickle cell disease is a recessive trait which causes a deformation in red blood cells due to a mutation in the gene that codes for hemoglobin. Consider a father and a mother BOTH with the genotype Hh, where H is the normal hemoglobin gene, and h is the gene that codes for the defective hemoglobin. What percent of their children will have the genotype hh, which means they will have the full-blown disease?
Answer: Sickle cell disease is caused by a mutation in the hemoglobin-Beta gene found on chromosome 11. Hemoglobin transports oxygen from the lungs to other parts of the body. Red blood cells with normal hemoglobin (hemoglobin-A) are smooth and round and glide through blood vessels.
Explanation:
All forms of energy production and other resource extraction have associated _________ costs and risks as well as benefits.
Answer:
The correct answer is - economic, social, environmental, and geopolitical
Explanation:
Natural Resources are the resources that are formed in nature on their own and can be renewable or non-renewable. There are various risks and benefits are associated with the production of all forms of energy other resource extraction.
These costs or risk includes economic, environmental, social, and geopolitical risks. These risks have various factors that decide if these risk or benefit and can be altered by the new technologies using for the extraction and production of various forms of energy.
Which pair of organisms is most closely related?
A) conifer/algae
B) rosebush/housefly
C) wasp/anaconda
D) diatom/whale
Peppered Moths
Before the Industrial Revolution there were more sightings of light-colored moths and
fewer sightings of dark-colored moths. As factories were built during the Industrial
Revolution, pollution increased. At this time, scientists observed that the number of
light-colored moths decreased, while the number of dark-colore moths increased and
became more abundant in the population than the light-colored variety.
Which graph represents how natural selection acted on moth coloration during
the Industrial Revolution? The dotted line represents the original population and the
solid line represents the population after selection.
Answer:
The correct answer is - Option B.
Explanation:
Before the Industrial Revolution, the light color moths were predominant so that they can blend in with the light-colored trees and lichens in their environment. After releasing coal smoke from factories, the trees became darkened, and the light-colored moths become an easy target for predator birds to spot.
Over time, the frequency of the dark moth increased due to they had a higher survival rate in habitats affected by the air pollution and it blends with darker coloration blended with the sooty trees. This is a shift in the population’s genetic variance toward the new, phenotype.
In graph B, light color moth frequency decreases, and after natural selection increases over time and after a decrease in evolution the dark color again decreases.
Question b OT 15
Ain
force is the overall force on an object after all the forces
are added together.
Answer:
The correct answer is - Net force.
Explanation:
Adding all the forces that are applied to a particular object, body, or particle is the net force. This overall force that is applied can be calculated by a vector sum of all other forces exerted on the body.
So if two forces are applied in opposite directions to one another, they combine by subtraction whereas If one force is less than the other force, the net force is in the direction of the greater force.
In the lab, you isolate a mutant strain of bacteria in which the phosphatase that would normally dephosphorylate NtrC-P is defective. Assuming the levels of NtrB and NtrC protein remain normal (same as wild type), what is the expected phenotype of this mutant
Answer:
GlnA will be overexpressed and the cells will have more glutamine than glutamate
Explanation:
Glutamine synthetase (glnA) is an enzyme involved in nitrogen metabolism that catalyzes the amidation of glutamate to glutamine. Moreover, the phosphorylated form of the NtrC response regulator protein (NtrC~P) acts as a transcriptional activator of genes associated with nitrogen metabolism, including glnA. NtrC~P exhibits 1-an enhanced DNA binding activity (increased oligomerization on the target DNA template) and 2-ATPase activity (oligomerization of the NtrC phosphoprotein), which are fundamental features for transcriptional activation. In consequence, it is expected that a higher level of NtrC~P (due to a defective form of the phosphatase that dephosphorylates NtrC~P) leads to the overexpression of glnA, thereby increasing glutamine levels and simultaneously decreasing glutamate concentration.
The DNA strand TACGGCTTA, If properly transcribed, would result in an RNA strand with the sequence ?
When hydrogen is burned, it reacts with oxygen and produces
O carbon dioxide
O water
O oll
O hellum
why windows of the room become misty on a cold day
Answer:
Condensation forms when warm, humid air contacts a cold surface. Moisture is in the air all around us and warmer air can hold more moisture. As air cools, it contracts and its moisture condenses. .... Warm, humid indoor air cools and contracts; as it contacts the cooler windows, the moisture condenses on the glass.
¿De qué manera pueden complementarse la
teoría Sintética y la teoría de los Equilibrios
Puntuados?
La teoría sintética
El redescubrimiento en 1900 de la teoría de la herencia de Mendel por el botánico y genetista holandés Hugo de Vries y otros llevó a un énfasis en el papel de la herencia en la evolución. De Vries propuso una nueva teoría de la evolución conocida como mutacionismo, que esencialmente eliminó la selección natural como un proceso evolutivo importante. Según de Vries (a quien se unieron otros genetistas como William Bateson en Inglaterra), en los organismos tienen lugar dos tipos de variación. Una es la variabilidad "ordinaria" observada entre los individuos de una especie, que no tiene consecuencias duraderas en la evolución porque, según de Vries, no podría "conducir a una transgresión de la frontera de la especie [es decir, al establecimiento de nuevas especies] incluso en las condiciones de la selección más rigurosa y continua ". El otro consiste en los cambios provocados por mutaciones, alteraciones espontáneas de genes que dan lugar a grandes modificaciones del organismo y dan lugar a nuevas especies: “La nueva especie se origina así de repente; es producido por el existente sin ninguna preparación visible y sin transición ”.
Muchos naturalistas se opusieron al mutacionismo y, en particular, los llamados biometristas, liderados por el estadístico inglés Karl Pearson, quien defendió la selección natural darwiniana como la principal causa de la evolución a través de los efectos acumulativos de variaciones individuales pequeñas y continuas (que los biometristas se supone que pasa de una generación a la siguiente sin estar limitado por las leyes de herencia de Mendel).
A group of similar organisms that can meet with each other in produce fertile offspring is a
Answer:
A species is the answer :)
What is the answer to number one will mark brainlist
Answer:
GGATTTGGCCCTATA
Explanation:
What domain is eubacteria found in?
[tex]{\boxed{\mathcal{\red{AnSwEr:}}}}[/tex]
[tex]\sf\purple{Domain \:Bacteria.}[/tex]✔
The Eubacteria are found in the domain Bacteria.Eubacteria means [tex]\sf\pink{true\:bacteria}[/tex], it is unicellular, lacks a proper nucleus and is a prokaryote.[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]
proteins are made where in the cell
Answer:
Ribosomes
Explanation:
HEYYYY HOW ARE YOU
HOWS LIFE
HOWS SCHOOL
Answer:
Bad
Explanation:
School life is boring not fun at all
Pls help me
What is the % phenotype for this cross if round is the dominant trait?
A. 25% round, 75% wrinkled
B. 50% round, 50% wrinkled
C. 75% round, 25% wrinkled
D. 100%, round, 0% wrinkled
Answer:
D
Explanation:
Phenotype = the physical characteristics; ex: wrinked, round, yellow, green, etc...
When crossing this Punnett Square, you would get 100% Rr. Therefore, D is the answer.
The differences in the curves of the graphed data indicate that there were differences in the number of electrons produced in the three samples during the experiment. Discuss how electrons are generated in photosynthesis and why the three samples gave different transmittance results.
Solution:
Photosynthesis is a process by which green plants and vegetables prepare their food using carbon dioxide from the atmosphere, water from the soil and in the presence of sun light with the help of chlorophyll.
-- During photosynthesis process, electrons are originated from the chlorophyll and it absorbs the photons of light from the atmosphere.
-- the energies are passed inward from the pigments to pigments until they reaches the reaction center.
-- then the energy is transferred to the P680, thus boosting the electron to the high energy level.
-- this high energy electron then passes to the acceptor molecule and is replaced with the electron from the water.
-- this splitting the water releases oxygen in the atmosphere that we breathe.
-- the electron generation is proportional to the DPIP reduction light transmittance.
-- the decrease in the light availability decreases the electron quantity of the electrons which will be generated.
-- the boiling disrupts the functional structures.
Which best describes an abiotic factor?
O A living part of the environment
O A non-living part of the environment
Answer:
B. Abiotic factor are non living part of the environment.
Explanation:
Biotic factors are the living factors . Abiotic factor is the non living factor.
3. Round shells is incompletely dominant to square shells, the heterozygous combination is a pointed shell. Smelly
shell's is an X-linked trait and recessive. A pointed shell smelly shelled male is crossed with a round
heterozygous non-smelly shelled female. What's the phenotype of their offspring?
Answer:
2/16 rounded not smelly females, RRX+X-
2/16 pointed not smelly females, RrX+X-
2/16 rounded smelly females, RRX-X-
2/16 pointed smelly females, RrX-X-
2/16 rounded not smelly males, RRX+Y
2/16 pointed not smelly males, RrX+Y
2/16 rounded smelly males, RRX-Y
2/16 pointed smelly males, RrX-Y
Explanation:
Available data:
RR round shellrr square shellRr Pointed shellX+ is dominant and codes for not smellyX- is recessive and codes for SmellyCross: A pointed smelly shelled male with a round heterozygous non-smelly female
Parentals) Rr X-Y x RRX+X-
Gametes) RX-, RY, rX-, rY
RX+, RX+, RX-, RX-
Punnett square) RX- rX- RY rY
RX+ RRX+X- RrX+X- RRX+Y RrX+Y
RX+ RRX+X- RrX+X- RRX+Y RrX+Y
RX- RRX-X- RrX-X- RRX-Y RrX-Y
RX- RRX-X- RrX-X- RRX-Y RrX-Y
F1) 2/16 bivalves are expected to be rounded not smelly females, RRX+X-
2/16 bivalves are expected to be pointed not smelly females, RrX+X-
2/16 bivalves are expected to be rounded smelly females, RRX-X-
2/16 bivalves are expected to be pointed smelly females, RrX-X-
2/16 bivalves are expected to be rounded not smelly males, RRX+Y
2/16 bivalves are expected to be pointed not smelly males, RrX+Y
2/16 bivalves are expected to be rounded smelly males, RRX-Y
2/16 bivalves are expected to be pointed smelly males, RrX-Y
One way to think about the importance of biodiversity is simply to think in terms of natural capital: the roles that genes, species, ecosystems, and ecological processes play in supporting human society and a healthy biosphere. What are benefits provided by biodiversity?
Answer and Explanation:
Biodiversity composes of different species living in a certain restricted area. It is the variability of living beings in a natural environment, involving all the species on the planet and their genetic material. This variety includes all plants, animals, fungus, and microorganisms living in a certain place, their genetic variability, and the ecosystems these species form.
Ecosystems include all the biotic, physical, and chemical components of nature, continuously interacting and depending on each other. The ecosystem is composed of living and non-living things that interact and depend on each other. These are the biotic and abiotic factors.
Biodiversity, in equilibrium with abiotic factors, provides ecosystem services, which are important for the maintenance of all forms of life, including human beings.
Ecosystem services
When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:
Provision or supply:These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials, raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.
Regulation:Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.
Cultural:Refers to not the material benefits. Ecosystems provide a recreational place or area to spend time and learn. They provide a spiritual/religious space, are a source of inspiration. Ecosystems are cultural patrimony and the source of scientific knowledge.
Base your answer on the stage of the human menstrual cycle, chosen from the list below, that is most closely associated with that statement. Stages of the Human Menstrual Cycle (1) Follicle (2) Ovulation (3) Corpus luteum (4) Menstruation It is characterized by a yellow-bodied structure that secretes the hormone progesterone.
Heredity is
A. The passing of acquired traits from parents to offspring
B. The complete analysis of the fossil record
C. The passing of traits from parents to offspring
D.The relationship between humans and bacteria
Why shouldn’t you put a person with hypothermia in a hot bath
Answer:His body would hurt
Explanation:
If your body is affect by the cold then with that fast of a changed would affect it skin i think
Which of the following examples of humoral immunity establish immunological
memory? Mark all that apply.
getting a bacterial or viral infection
antibodies administered as gamma globulin
antibodies passed through breast milk
getting a vaccine
Answer:
I think ..getting a vaccine
..is answer
Explanation:
antibodies administered as gamma globular
(I think)