4. Gremlins have a gene that determines if their hair is grey (W), which is dominant...
4. Gremlins have a gene that determines if their hair is grey (W), which is dominant to white hair (w). However, if a gremlin is homozygous for grey hair, it shrivels up and disintegrates before it’s born. What is this an example of, and what genotypic and phenotypic outcomes would you expect if you crossed two heterozygote gremlins?
Homework Answers
GREMLINS CONTAIN TWO GENES SHOWING LAW OF DOMINANCE IN WHICH DOMINANT GENE CODE FOR GREY HAIR. THE HOMOZYGOUS DOMINANT GREMLINS DIE BEFORE BIRTH. CROSSING BETWEEN TWO HETEROZYGOTES PRODUCES 1 HOMOZYGOUS DOMINANT, 2 HETEROZYGOTES AND 1 HOMOZYGOUS RECESSIVE GREMLINS. SINCE HOMOZYGOUS DOMINANT WILL DIE BEFORE BIRTH SO GENOTYPIC AND PHENOTYPIC OUTCOMES WILL BE SEEN LEAVING HOMOZYGOUS DOMINANT GREMLINS.
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4. Gremlins have a gene that determines if their hair is grey
(W), which is dominant...
1. In humans, dark hair (D) is dominant over blond hair (d). If a heterozygous dark...
1. In humans, dark hair (D) is dominant over blond hair (d). If a heterozygous dark haired man had a son with his blond haired wife, what would the probability be that the son would have dark hair like his father? 2. a) In tomatoes, red fruit (R) is dominant over yellow fruit. If a homozygous red fruit plant is crossed with a yellow fruit plant, what are the expected genotypic and phenotypic ratios of the F1 generation? b) if...
In dogs, short hair is dominant over long hair, and dark coat color is dominant over...
In dogs, short hair is dominant over long hair, and dark coat
color is dominant over albino fur. Assuming that these effects are
caused by two independently sorting genes, what will be the result
of the following cross? Create a Punnet square and show your
work.
2. In tomatoes, the gene for round fruit is dominant to the gene for long fruit. A homozygous round fruit plant was crossed with a long fruit plant. Show the genotype of the two...
In guinea pigs, the allele for short hair is dominant over long hair. If a heterozygous...
In guinea pigs, the allele for short hair is dominant over long hair. If a heterozygous short hair guinea pig is crossed with another heterozygous short hair guinea pig, what is the probability of an offspring having long hair? In pea plants purple flower allele is dominant to white flower alleles. If a homozygous purple flower plant is crossed with a white flower plant, what percent of their offspring would you expect to be purple? Straight fur (S) is dominant...
2) In wild yarrow, short plants are genetically recessive; tall plants are dominant a) A short...
2) In wild yarrow, short plants are genetically recessive; tall plants are dominant a) A short plant is pollinated by a heterozygous tall plant. What genotypic and phenotypic outcomes would you expect for their offspring? b) A homozygous tall plant is pollinated by a heterozygous tall plant. What genotypic and phenotypic outcomes would you expect for their offspring?
In hogs, and allele that produces a white belt around the animals body (W) is dominant...
In hogs, and allele that produces a white belt around the animals body (W) is dominant over its allele for a uniformly colored body (w). The dominant allele of another gene (F) produces a fusion of the two hoofs on each foot. Suppose a uniformly-colored hog homozygous with fused hoofs is mated with a normal-footed homozygous for the belted character. what are the genotypes of the parents? belted parent: Uniformly-colored parent: What are the genotypic and phenotypic ratios in the...
Punnett Square for Question #4 is a the top Punnett Square Genotypic ratio: Phenotypic ratio: 5....
Punnett Square for Question #4 is a the top
Punnett Square Genotypic ratio: Phenotypic ratio: 5. Purple flowers (P) are completely dominant over white flowers (p). If a pea plant is heterozygous for purple flowers, can any of this plant's offspring have all purple flowers? Think about the different genotypes with which you can cross the hetero- zygous parent: homozygous dominant, heterozygous, and homozygous recessive. Use three Punnett squares to show your work for each possible phenotype. Heterozygous purple pea...
1.My wife has black color eyes, the dominant trait. All of her family and relatives have...
1.My wife has black color eyes, the dominant trait. All of her family and relatives have dark eyes too. I have light color eyes (blue), the recessive trait. We are hoping for a blue-eyed baby. What is the probability we will have a baby with blue eyes? What is the probability we will have a baby with dark eyes? 2. In humans, tongue rolling is a dominant trait, those with the recessive condition cannot roll their tongues. Bob can roll...
Fictional scenario: Individuals with green hair have the presence of the dominant gene "Z" and people...
Fictional scenario: Individuals with green hair have the presence of the dominant gene "Z" and people with purple hair are homozygous for the recessive allele “z”. There were 200 students in a classroom who were surveyed for their hair color and 155 people had green hair whereas 45 people had purple hair. Use the information to answer the next set of questions. Show your work for credit. 1) What are the variables for a recessive allele? A dominant allele? Homozygous...
1) (3 pts) Short hair in rabbits is governed by a dominant allele L and long...
1) (3 pts) Short hair in rabbits is governed by a dominant allele L and long hair by its recessive allele, l. Black hair results from the action of the dominant genotype B- and brown from the recessive genotype bb. a) What are the gametes possible from a doe (female rabbit) with the genotype Llbb? b) Depict the associated Punnett square or branch diagram for the cross: LlBb x LLBb 2) (6 pts) A dominant sex-linked allele B controls silver-colored...
6. In tigers, a dominant allele (W) is responsible for the expression of the normal orange...
6. In tigers, a dominant allele (W) is responsible for the expression of the normal orange pigment. Individuals that inherit twe recessive alleles (w) lack the normal orange pigment in their fur, appearing white with black stripes. A pair of normally colored parewis produces a cub that is white with black stripes and scab that is orange with black stripes. What are the possible genotypes of the cube? b. What are the possible genotypes of the parents? 6. Explain your...
1. In humans, dark hair (D) is dominant over blond hair (d). If a heterozygous dark haired man had a son with his blond haired wife, what would the probability be that the son would have dark hair like his father? 2. a) In tomatoes, red fruit (R) is dominant over yellow fruit. If a homozygous red fruit plant is crossed with a yellow fruit plant, what are the expected genotypic and phenotypic ratios of the F1 generation? b) if...
In dogs, short hair is dominant over long hair, and dark coat
color is dominant over albino fur. Assuming that these effects are
caused by two independently sorting genes, what will be the result
of the following cross? Create a Punnet square and show your
work.
2. In tomatoes, the gene for round fruit is dominant to the gene for long fruit. A homozygous round fruit plant was crossed with a long fruit plant. Show the genotype of the two...
2) In wild yarrow, short plants are genetically recessive; tall plants are dominant a) A short plant is pollinated by a heterozygous tall plant. What genotypic and phenotypic outcomes would you expect for their offspring? b) A homozygous tall plant is pollinated by a heterozygous tall plant. What genotypic and phenotypic outcomes would you expect for their offspring?
Punnett Square for Question #4 is a the top
Punnett Square Genotypic ratio: Phenotypic ratio: 5. Purple flowers (P) are completely dominant over white flowers (p). If a pea plant is heterozygous for purple flowers, can any of this plant's offspring have all purple flowers? Think about the different genotypes with which you can cross the hetero- zygous parent: homozygous dominant, heterozygous, and homozygous recessive. Use three Punnett squares to show your work for each possible phenotype. Heterozygous purple pea...
Fictional scenario: Individuals with green hair have the presence of the dominant gene "Z" and people with purple hair are homozygous for the recessive allele “z”. There were 200 students in a classroom who were surveyed for their hair color and 155 people had green hair whereas 45 people had purple hair. Use the information to answer the next set of questions. Show your work for credit. 1) What are the variables for a recessive allele? A dominant allele? Homozygous...
6. In tigers, a dominant allele (W) is responsible for the expression of the normal orange pigment. Individuals that inherit twe recessive alleles (w) lack the normal orange pigment in their fur, appearing white with black stripes. A pair of normally colored parewis produces a cub that is white with black stripes and scab that is orange with black stripes. What are the possible genotypes of the cube? b. What are the possible genotypes of the parents? 6. Explain your...
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