Cont............ISolve this problem:1-for humans, brown eyes are dominant (B) over blue eyes (b).A heterozygous brown-eyed man marries a heterozygous brown-eyed female. What are possible genotypes and phenotypespercent's of offspring?

1. Identify the parental genotypes: The heterozygous brown-eyed man would have the genotype Bb, and…

Answered: Cont............ I Solve this problem:…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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TO င် ၅ဝပ် တွင် တွင် ၏ ဝ DO (A) The blue trait is inherited as an autosomal recessive trait which means that affected individuals have copies of a mutant gene. (B) Indicate which individuals are carriers of the "blue" gene by placing the letters Bb next to their symbol. (C) What is the relationship of the parents of the "blue" children? (D) What is the probability that the unaffected siblings of the "blue" children are carriers for the "blue" trait? (E) What warning does marrying close relatives does this illustrate?
26. In sheep, eye color is controlled by a single gene with two alleles. When a homozygous brown-eyed sheep is crossed with a homozygous green-eyed sheep, blue-eyed offspring are produced. If the blue-eyed sheep are mated with each other, what percent of their offspring will most likely have brown eyes? (A) 0% (B) 25% (C) 50% (D) 75% (E) 100% 27. In peas the trait for tall plants is dominant (T) and the trait for short plants is recessive (t). The trait for yellow seed color is dominant (Y) and the trait for green seed color is recessive (y). A cross between two plants results in 296 tall yellow plants and 104 tall green plants. Which of the following are most likely to be the genotypes of the parents? (A) TTYY x TTYY (в) тТуу х ТTYу (C) TtYy x TIYY (D) TtYy x TTYY (Е) TIYY X Tiyy 28. In humans, red-green color blindness is a sexlinked recessive trait. If a man and a woman produce a color-blind son, which of the following must be true? (A) The father is color-blind. (B) Both parents…
In humans, free ear lobes (E) is dominant over attached ear lobes (e), and brown eyes (B) is dominantover blue eyes (b). A man with free ear lobes and brown eyes marries a woman with attached ear lobes andbrown eyes. Of four children, one has free ear lobes and brown eyes, one has free ear lobes and blue eyes,one has attached ear lobes and brown eyes, and one has attached ear lobes and blue eyes. Determine thegenotypes of the parents.
7) In cats, the gene for coat color is both X-linked and incompletely dominant. There are black coat and yellow coat alleles, with calico (tortoise shell) as the heterozygous form. If a yellow male mates with a calico female, what are the expected offspring phenotypes (in percent)? hbit
6) Duchenne muscular dystrophy (DMD) is a muscle wasting disease and is an X-linked recessive disorder. A man with this disease has children with a woman who does not have the disease, but her father did. If they had a ason, what would be the chance that he would have DMD? If they had a daughter? Any child? Construct a Punnett square to determine the answers. 10) In cats, coat color is completely dominant to albino (Mendelian genetics) and is an autosomal trait. Playa is a female albino cat and is crossed with Azul, a black-coated male. In their first litter, they have 4 black kittens and 2 albino kittens. If in the second litter, they have 8 kittens, how many of the kittens are expected to be albino? Construct a Punnett Square to determine the answer.
26. In sheep, eye color is controlled by a single gene with two alleles. When a homozygous brown-eyed sheep is crossed with a homozygous green-eyed sheep, blue-eyed offspring are produced. If the blue-eyed sheep are mated with each other, what percent of their offspring will most likely have brown eyes? (A) 0% (B) 25% (С) 50% (D) 75% (E) 100% 27. In peas the trait for tall plants is dominant (T) and the trait for short plants is recessive (t). The trait for yellow seed color is dominant (Y) and the trait for green seed color is recessive (y). A cross between two plants results in 296 tall yellow plants and 104 tall green plants. Which of the following are most likely to be the genotypes of the parents? (A) TTYY x TTYY (В) ТТуу х TТYу (C) TtYy x TtYy (D) TtYy x TTYY (E) TtYY x Ttyy 28. In humans, red-green color blindness is a sexlinked recessive trait. If a man and a woman produce a color-blind son, which of the following must be true? (A) The father is color-blind. (B) Both parents…
Fruit flies with the genotypes Xg+h+Xgh and XghY are crossed. Note that two X-linked loci are being evaluated, and the presence of a + indicates a dominant allele. The homogametic offspring will.... 1. express either the dominant or the recessive phenotypes for both g and h. 2. all express both dominant phenotypes. 3. express neither phenotype. 4. all express both recessive phenotypes.
A1) The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygoous for the traits and marries a woman who has no widows peak and is heterozygous for hitchhikers thumb. What fraction of this couples children should have a widow's peak and a hitchhiker's thumb? 3/8 1/4 1/2 3/4 0 A2)The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygoous for the traits and marries a woman who has no widows peak and has no hitchhikers thumb. What fraction of this couple's children should have no widow's peak and a hitchhiker's thumb? 3/8 0 1/4 1/2 1/8
In hamsters, black fur (B) is dominant over brown fur (b) and long fur (L) is dominant over short fur (l). A black, long furred female whose mother had brown fur and whose father had short fur is mated with a black, short furred male whose father had brown, long fur. What is the probability that the first three offspring will have brown, long fur? What is the probability that the first offspring will have black, long fur? What is the probability that one of the first three offspring will have black, long fur and the other two brown, short fur?
In dogs, wire-haired is due to a dominant gene (W), smooth-haired is due to its recessive allele (w). (must show Punnett Square) Two wire-haired dogs are mated. Among the offspring of their first litter is a smooth-haired pup. What is the Genotype of the Parents? () If these, two wire-haired dogs mate again, what are the chances that they will produce another smooth-haired pup? What are the chances that the pup will wire-haired pup? (+) A wire-haired male is mated with a smooth- haired female. The mother of the wire-haired male was smooth-haired. What are the phenotypes and genotypes of the pups they could produce? (t)
choose only if its a or b no need to explain. 1.) In sex-linked inheritance, if a colour blind man mates with a heterozygous woman, what is the expected ratio of phenotypes among the offsprings? Question 6 options: a.) normal female : heterozygous female : normal male : colour-blind male (1 : 1 : 1 : 1) b.) normal female : normal male : colour-blind male (2 : 1 : 1) c.) normal female : heterozygous female : normal male ( 1 : 1 : 2) d.) heterozygous female: colour blind female: normal male: colour-blind male (1: 1: 1: 1) 2.) The human female has two X chromosomes. In which of the following ways will x-linked traits be inherited among humans? a.) from mother to daughter only b.) from mother to son only c.) from mother to both son and daughter d.) from mother neither to son, nor to daughter
7. Hereditary ichthyosis in humans is a sex-linked trait. If a normal male and a carrier female produce offspring, what will be the phenotypic ratios of: Normal females to scaly females? Normal males to scaly males? 8. Raedwald is color blind. His four sisters and his parents all have normal color vision. Who passed this condition on to Raedwald, and what can be said for certain about the genotypes of his maternal and paternal grandparents? wwwwM

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Cont............ I Solve this problem: 1-for humans, brown eyes are dominant (B) over blue eyes (b). A heterozygous brown-eyed man marries a heterozygous brown- eyed female. What are possible genotypes and phenotypes percent's of offspring?