A sugarcane plant with yellow pollen and wavy leaves is crossed with a plant with yellow pollen and smooth leaves. Seed are collected and germinated. The following results are obtained in the progeny:
153 yellow pollen, wavy leaves
145 yellow pollen, smooth leaves
48 white pollen, wavy leaves
51 white pollen, smooth leaves
a. For each locus (trait): Assign appropriate symbols for the alleles of the genes, indicate the dominance interaction between the two alleles, and give all possible genotypes and their associated phenotypes
b. Give the genotypes of the parents of this cross.
c. Give the expected genotypic and phenotypic ratios of the progeny of this cross.
Answers
Answer:
a.
i) Y and y represent Yellow and white alleles for the pollen color gene; where Y (yellow) is dominant over y (white).
ii) W and w represent wavy and smooth alleles respectively for the leaf texture gene. W (wavy) is dominant over w (smooth).
YYWW, YyWW, YyWw, YYWw- yellow, wavy phenotype
YYww, Yyww- yellow, smooth phenotype
yyWW, yyWw- white, wavy phenotype
yyww- white, smooth phenotype
b) yellow pollen and wavy leaves (YyWw) × yellow pollen and smooth leaves (Yyww)
c) Expected genotypic and phenotypic ratio of progeny: 3:3:1:1
Explanation:
This question involves two distinct genes; one coding for pollen color and the other for leaf texture. Let Y and y represent Yellow and white alleles respectively for the pollen color gene; where Y (yellow) is dominant over y (white) while W and w represent wavy and smooth alleles respectively for the leaf texture gene; W allele (wavy) is dominant over w allele (smooth).
Next, we convert the progeny number to phenotypic ratio by dividing each number by the smallest number (48)
yellow pollen, wavy leaves= 153/48 =3.18
yellow pollen, smooth leaves= 145/48= 3.02
white pollen, wavy leaves= 48/48= 1
white pollen, smooth leaves= 51/48= 1.06
Approximately, the phenotypic ratio of the progeny is 3:3:1:1
According to the question, a parent with with yellow pollen and wavy leaves will have genotype YyWw because white pollen (w) and smooth leaf (s) was produced in the progeny. Also, the other parent with yellow pollen and smooth leaves will have genotype: Yyww. In a cross between these two parents i.e. YyWw × Yyww, the following gametes will be produced:
YyWw- YW, Yw, yW, yw
Yyww- Yw, Yw, yw, yw
Using these gametes in a punnet square (see attachment), the following 16 offsprings will be produced in a ratio 3:3:1:1
yellow pollen, wavy leaves (Y_W_) 6
yellow pollen, smooth leaves (Y_ww) 6
white pollen, wavy leaves (yyW_) 2
white pollen, smooth leaves (yyww) 2
Related Questions
Which of the following would be the MOST dangerous consequence if humans depleted the world’s timber supply?
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Answer:
No oxygen
Explanation:
we wouldn't be able to breath, cause without the trees there would be no oxygen
Which statement about vacuoles is true? Only plant cells contain vacuoles. Only animal cells contain vacuoles. Vacuoles are larger in plant cells than in animal cells. Vacuoles are larger in animal cells than in plant cells.
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Answer:
Vacuoles are larger in plant cells than in animal cells
Answer:
vacuoles are larger in plant cell than in animal cell
Closed and Open Systems
An open system is one that receives input from
outside the system. For example, your body is an
open system because it receives food and oxygen
from outside the system (your body). What is another
example of an open system?
A rock in a field
An earthworm taking in soil for nutrition
Answers
Answer:
earthworm taking soil for nutrition
Explanation:
it's consuming the energy unlike the rock
An earthworm taking in soil for nutrition is another example of an open system, option B is correct.
An open system is characterized by its ability to exchange matter and energy with its external environment. In the case of an earthworm, it actively takes in soil for nutrition, breaking down organic matter and absorbing nutrients through its digestive system. This process allows the earthworm to grow, reproduce, and carry out essential life functions.
The exchange of soil, nutrients, and gases (such as oxygen) occurs continuously, sustaining the earthworm's biological activities. In contrast, a rock in a field does not interact with its environment in the same way. It remains a closed system, passively experiencing natural forces without actively receiving external inputs or engaging in metabolic processes, option B is correct.
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The complete question is:
An open system is one that receives input from outside the system. For example, your body is an open system because it receives food and oxygen from outside the system (your body). What is another example of an open system?
A. A rock in a field
B. An earthworm taking in soil for nutrition
there are at least 2 million species on earth, and species have been naturally evolving and going extinct for billions of years (in fact, over 99% of all species that ever existed are now extinct!). given these facts, why do we care if human activity is driving other species extinct as we grow?
Answers
Answer:
This is because humans are causing species to go extinct at a faster rate than the normal rate.
Explanation:
It is documented that there are at least 2 million species on earth, and species have been naturally evolving and going extinct for billions of years. Some may say even if nothing is done there would still be extinction of this species which is true.
We care if human activity is driving other species extinct as we grow because humans are causing species to go extinct at a faster rate than the normal rate.
How do the hypothesis of microspheres and the RNA World hypothesis build off of each other?
Answers
Answer:
Microspheres are formed of proteins. It has been found that when an amino acid is permitted to get desiccated, then this amino acid produces proteins that in turn give rise to microspheres.
On the basis of the RNA world hypothesis, the first genetic substance was considered to be an RNA, and then later the DNA turned out to be the genetic substance of higher species during the passage of evolution. It was also believed that microspheres comprised encoded information within it, and at the time of the splitting of microspheres, this encrypted information may have got transferred to the upcoming generation.
Explanation:
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Answer:
Clouds are created when water vapor, an invisible gas, turns into liquid water droplets. These water droplets form on tiny particles, like dust, that are floating in the air.
Explanation:
When a true-breeding blue salamander is mated to a true-breeding red salamander, 100%of the offspring are blue. Assuming that salamander skin color is determined by a singlegene, which of the following statements are correct?A. The blue allele is dominant to the red alleleB. The red allele is recessive to the blue alleleC. The blue gene is dominant to the red geneD. The red gene is recessive to the blue geneE. Both A and BF. Both C and D
Answers
Answer:
Both A and B
Explanation:
True breed is a breed that is 100% identical with the parent, the traits inherited from that parents are 100% controlled by same allele of a gene hence they are exact copy.
A single gene can have several alleles, it is the allele that combines together that determines what is seen or expressed.
Allele for blue colour is dominant over allele for red color and that is what led to the phenotypic appearance of the offspring which is blue and the red color is masked. Also, because they are true breeds it means the genotype have the same allele e.g. AA
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Answer:
no
Explanl
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Explanation:
A.They filter waste and extra water from blood so they can create urine, which is removed from the body.
The statement that best explains the way in which a cell gets rid of waste is that the secretory vesicle/ transport vesicle fuses with the plasma membrane and releases its content outside the cell.
What is exocytosis?Exocytosis is the process of secretory vesicles fusing with the plasma membrane, resulting in the extracellular release of vesicle content.
What occurs during exocytosis?It leads to integration of new proteins and lipids into the plasma membrane.Release of the content of secretory vesicle to extracellular medium.To learn more about secretory vesicle, vacuole, exocytosis and transport vesicle here,
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what units would you use to measure a red blood cell
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One difference between plant and animal cells is that (1) plant cells have cell walls; animal cells don't (2) plant cells can't move; animal cells can (3) plant cells live in water; animal cells don't ( 4) plant cells have a nucleus; animal cells don't (5) plant cells have vacuoles; animal cells don't
Answers
Answer:
1) Plants cells have cell walls; animal cells don’t.
Explanation:
Cell walls function is to help cells stick to each other, which is good for plants since they don’t move around. But as for animal, they need to move around so it’s not good for them to have it.
Without cell walls, animal cells can take on different shapes!
It makes it able to move easier, flexible.
Hope it helped! Please mark brainliest! Thank you! :)
1. What happens to our body when we are exposed to temperature extremes? What do we do to control our internal temperature?
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Explanation:
when we are in heat our body companciates with surrounding by profusely sweating
we can control our internal temperature by escape in time from heat and
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Answer:
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Answers
Answer:
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Answers
The role of the nervous system during digestion is to provide electrical signals to initiate peristalsis.
Peristalsis is a series of smooth muscle contractions which are capable of moving foods through the digestive tract.This movement (peristalsis) is controlled by the autonomic enteric nervous system, which is one of the main divisions of the autonomic nervous system (ANS).In conclusion, the role of the nervous system during digestion is to provide electrical signals to initiate peristalsis.Learn more in:
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Answer:
d
Explanation:
DNA has become a boon in surveillance programs that is used to monitor the presence of invasive species in the aquatic system and can monitor the presence of nucleic acid water even if the animals are not there
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Explanation:
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Answer:
d
Explanation:
Minerals regulate body fluids, assist in various body functions, contribute to growth, and aid in building tissues. True False
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Answer the question below (This is just a test!!)
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Answer:
We make big decisions in life. Like cooking, fabric, eating, oils we use. Tooth paste, brush, shampoo and conditioner. People come up with experiments. Just normally everything we do in life is similar to what scientists do.
what a dependent variable
A. diretly change by the experimenter
B. manipulated by charges to the independent variable
C. a variable that is kept constant
D. a variable that is used as a control
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Answer:
The correct answer would be B, manipulated by changes to the independent variable.
Explanation:
I hope this helps:)
In her studies of chimpanzee behavior, Jane Goodall collected both qualitative
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(From Topic: 1.3 In studying nature, scientists form and test hypotheses)
Answers
An example of quantitative data is mothers and their infants typically nap for two to three hours each afternoon. Therefore, option A is correct.
What is quantitative data ?The data expressing a certain quantity and amount or range is called as quantitative data. The two main types of quantitative data are discrete data and continuous data.
The difference between the qualitative data and quantitative data is the quantitative data is numbers-based, countable, or measurable while qualitative data is interpretation-based, descriptive, and relating to language.
In her studies of chimpanzee behavior, Jane Goodall collected both qualitative and quantitative data. Therefore, An example of quantitative data is mothers and their infants typically nap for two to three hours each afternoon.
Thus, option A is correct.
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Your question is incomplete, probably your question was
In her studies of chimpanzee behavior, Jane Goodall collected both qualitative
and quantitative data. Which of the following is an example of quantitative data?
(From Topic: 1.3 In studying nature, scientists form and test hypotheses)
A. Mothers and their infants typically nap for two to three hours each afternoon.
B. baiting the animals with bananas helped to attract them close enough for her to observe their social behavior and to photograph them.
C. researchers have observed chimpanzees using more than half a dozen tools for assorted purposes.
D. Other animals, including some birds and dolphins, are now known to use tools.
The negative feedback system that allows a person to sweat is an example of which
characteristic of living things
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Answer:
stops operating
deo: Are Bones Living Organs???
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Answer:
yes
Explanation:
A bone is a rigid organ that constitutes part of the vertebrate skeleton in animals. Bones protect the various organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility.
What is the definition hereditability?
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The field of ________ is a thoroughly modern discipline that has led to new ways to treat infectious disease.
A) recombinant DNA technology
B) epidemiology
C) immunology
D) serology
E) biochemistry
Answers
Answer:
A
Explanation:
The field of recombinant DNA technology is a thoroughly modern discipline that has led to new ways to treat infectious diseases.
Recombinant DNA technology involves the process of combining DNA of different organisms and inserting such in a host organism in order to elicit desirable genetic characters that could be of value to different fields in science.
The fields in which recombinant DNA technology has found applications include agriculture, medicine, and industrial productions. With this technology, new drugs and methods of treating diseases have been developed in the area of medicine, disease-resistant crop varieties have been developed in agriculture, and important chemicals for production have been developed in industries.
Correct option: A
When the concentration of a substance higher on one side of the cells selectively permeable membrane, certain molecules may move by osmosis or diffusion through the membrane without the cell using any energy. This process is called
A.passive transport
B.active transport
C. Mitosis
D. Replication
Answers
Answer:
A.
Explanation:
osmosis and diffusion are both passive transport bc it doesnt require energy and only moves down cocentration gradient, never against concertration gradient. Give me a brainliest if i helped! ♡
When certain molecules may move by osmosis or diffusion through the membrane without the cell using any energy, the process is called passive transport.
When diffusion takes place between compartments separated by a membrane permeable to that solute, it is called simple diffusion.
Passive transport does not require any additional energy other than the movement of the molecules, moving these in favor of their concentration gradient.
In other words, simple diffusion does not require ATP expenditure, since it is a spontaneous phenomenon.
The molecules that are mobilized by simple diffusion through the membrane are the nonpolar and small, the fat-soluble and the small polar ones, but without a net electric charge, such as H2O.
In the particular case of H2O, passive transport is called osmosis, the passage of water through the membrane by osmosis always takes place spontaneously and very quickly.
H2O will diffuse from the compartment with the lowest concentration of solutes or hypotonic medium, to the compartment with the highest concentration of solutes or hypertonic medium, in such a way as to equalize the concentrations in both compartments.
Therefore, we can conclude that when certain molecules may move by osmosis or diffusion through the membrane without the cell using any energy, the process is called passive transport.
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Answers
Answer:
renewable
Explanation:
Biodiversity refers to the variety of plant and animal wild life in the world or in a particular habitat which is important in that specific location. Renewable is anything that recycles itself through its consumption. Which is what happens in biomes. Life dies off and provides the necessary resources for new life to be reborn and so on, thus making Biodiversity renewable.
Look at the image, and write the correct name of each biome from the following list. chaparral, taiga, deciduous forest, desert, grasslands, rain forest, savannah, tundra
Answers
Answer:
There are eight major terrestrial biomes: tropical rainforests, savannas, subtropical deserts, chaparral, temperate grasslands, temperate forests, boreal forests, and Arctic tundra. Biomes are large-scale environments that are distinguished by characteristic temperature ranges and amounts of precipitation.