A zoologist is investigating a population of squirrels whose coat color is controlled by a single...
A zoologist is investigating a population of squirrels whose coat color is controlled by a single gene whose two alleles (B1 & B2) are co-dominant. B1B1 individuals are black, B1B2 individuals are brown, and B2B2 are tan. She surveys the population and finds 600 black squirrels, 256 brown squirrels, and 112 tan squirrels. Is this population in HWE? If not, what might explain this pattern? Make sure to show your work.
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A zoologist is investigating a population of squirrels whose
coat color is controlled by a single...
The coat color gene of a population of squirrels is defined by a dominant allele G,...
The coat color gene of a population of squirrels is defined by a dominant allele G, which encodes a gray coat, and a recessive allele g, which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. If this population is in equilibrium, then what should the genotypic frequency of Gg squirrels in this population be? 0.52 0.46 0.42 0.55
In rats, pattern of coat color is controlled by a gene with two alleles. P is...
In rats, pattern of coat color is controlled by a gene with two alleles. P is the allele for hooded, in which the animal is mostly white with color restricted to the shoulders and neck. P is the normal solid body color allele. These two alleles exhibit incomplete dominance, so that heterozygotes have white bellies only. In a population of rats, the following phenotypes are observed: 60 solid color 40 white belly 100 hooded Question: If this population of rats...
You are investigating two traits in fruit flies controlled by one autosomal dominant gene each. The...
You are investigating two traits in fruit flies controlled by one autosomal dominant gene each. The B gene controls for body color (B=black or b=brown), while the r gene controls for body sculpture (R=rugose or r=smooth). After crossing heterozygous rugose black flies with homozygous smooth brown flies, you obtain an F1 generation of 100% rugose black flies. 1. What are the dominant alleles? 2. What are the genotypes of the two parent flies to perform a dihybrid cross? 3. Of...
In gerbils, the gene that specifies coat color is sex‑linked and has multiple alleles, as follows:...
In gerbils, the gene that specifies coat color is sex‑linked and has multiple alleles, as follows: B ‑ black, br ‑ brown, by ‑ yellow, and b ‑ albino. The allele br is incompletely dominant over by, the combination br by giving tan color; otherwise, dominance is in the order given ‑‑ B, br, by, b. (For your information, gerbils are mammals.) A black gerbil mated with a yellow gerbil gave one brown male and one black female offspring. a....
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...
Genetic Problems 10. Hemophilia is a sex-linked disorder. A normal woman whose father was hemophiliac marries...
Genetic Problems
10. Hemophilia is a sex-linked disorder. A normal woman whose father was hemophiliac marries a man who is not homophiliae What percentage of their son would be would be expected to be hemophiliac? What percentage of their daughters word expected to be hemophiliacs? Again, show your work, using a Punnett Square 11. Given parents with the genotypes AaBbCcDdEe and AaBbccDdEe. what is the probability of them producing offspring with the genotype of AABCDE 12. In humans, widow's peak...
#1. In peas, flower location and plant height are controlled by genes that follow Mendel’a law....
#1.
In peas, flower location and
plant height are controlled by genes that follow Mendel’a law. One
allele at each locus is donminat to the other at that locus: (i)
AXIAL FLOWERS (A), terminal flowers (a), and (ii) TALL PLANT (T),
short plant (t). A pure breeding plant for the dominant traits is
mated with pure breeding plant for the recessive traits. What
possible gametes can F1 individuals that interbreed make?
HWS, Check canvas for due date 20 pts NAME...
Multiple Choice 1. You count 1000 seeds from a monohybrid cross (i.e., single-locus heterozygote crossed with...
Multiple Choice
1. You count 1000 seeds from a monohybrid cross (i.e., single-locus heterozygote crossed with single-locus heterozygote). How many seeds do you expect to display the dominant phenotype? a. 1000 b. 750 c. 500 d. 250 2. Which of the following is among the purposes of a genetic dissection analysis? a. To determine how two alleles at a locus interact with one another. b. To determine the order of intermediaries in a genetic pathway. c. To determine whether a...
In a population of mice a particular locus has two alleles A1 (dominant) and A2 (recessive)....
In a population of mice a particular locus has two alleles A1 (dominant) and A2 (recessive). There are 126 A1A1, 167 A1A2 and 88 A2A2. Is this population in Hardy-Weinberg equilibrium (3 pts)? In a population of Gragons, there are 3151 A1A1, 1678 A1A2 and 2014 A2A2 individuals. If the environment changes so that the homozygous recessive genotype suffers a reduction of fitness where its fitness is now 0.73, but the other genotypes are unaffected, what will be the frequency...
In rats, pattern of coat color is controlled by a gene with two alleles. P is the allele for hooded, in which the animal is mostly white with color restricted to the shoulders and neck. P is the normal solid body color allele. These two alleles exhibit incomplete dominance, so that heterozygotes have white bellies only. In a population of rats, the following phenotypes are observed: 60 solid color 40 white belly 100 hooded Question: If this population of rats...
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...
Genetic Problems
10. Hemophilia is a sex-linked disorder. A normal woman whose father was hemophiliac marries a man who is not homophiliae What percentage of their son would be would be expected to be hemophiliac? What percentage of their daughters word expected to be hemophiliacs? Again, show your work, using a Punnett Square 11. Given parents with the genotypes AaBbCcDdEe and AaBbccDdEe. what is the probability of them producing offspring with the genotype of AABCDE 12. In humans, widow's peak...
#1.
In peas, flower location and
plant height are controlled by genes that follow Mendel’a law. One
allele at each locus is donminat to the other at that locus: (i)
AXIAL FLOWERS (A), terminal flowers (a), and (ii) TALL PLANT (T),
short plant (t). A pure breeding plant for the dominant traits is
mated with pure breeding plant for the recessive traits. What
possible gametes can F1 individuals that interbreed make?
HWS, Check canvas for due date 20 pts NAME...
Multiple Choice
1. You count 1000 seeds from a monohybrid cross (i.e., single-locus heterozygote crossed with single-locus heterozygote). How many seeds do you expect to display the dominant phenotype? a. 1000 b. 750 c. 500 d. 250 2. Which of the following is among the purposes of a genetic dissection analysis? a. To determine how two alleles at a locus interact with one another. b. To determine the order of intermediaries in a genetic pathway. c. To determine whether a...
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