In human beings, brown eyes are usually dominant over blue
eyes. Suppose a blue-eyed man marries a brown-eyed woman
whose father was blue-eyed. What proportion of their
children would you predict to have blue eyes?
- 1 Answers
- 19538 Views
- I also Faced
- E-Mail Answers
Answer Posted / sujay
consider genes for brown eyed is BB-dominant and gene for
blue eyed is bb-recessive
If woman is homozygous that is BB & marries with blue eyed
man then proportion of blue eyed children are like this:
man(BLUE) x woman(BROWN)
bb BB
b b B B
Bb Bb Bb Bb no blue eyed children and 0% of
offsprings are blue eyed.
If woman is heterozygous Bb and marries with blue eyed man
then proportion of blue eyed children are like this:
man(BLUE) x woman(BROWN)
bb Bb
b b B b
Bb bb Bb bb
here two children are blue eyed that 50% of the offspring
will be having blue eyes and 50% of children are brown eyed.
| Is This Answer Correct ? | 61 Yes | 17 No |
Post New Answer View All Answers
Are there alternatives to Genetic Engineering?
Explain steps involved in transcription?
How to construct Genetic Code?
Why was rii locus chosen by Benzer for his experiment?
Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?
Does postraumatic stress mutate genes?
The ABO blood system has been employed to settle cases of disputed paternity. Suppose, as an expert in genetics, you are called to testify in a case where the mother is type A, the child is type O and the alleged father is type B. How would you respond to the following statements of the attornies: a. "Since the mother has type A, the type O of the child must have come from the father and since my client is type B, he obviously could not have fatered the child." Made by the attorney of the alleged father. b. "Further tests revealed that this man is heterozygous and therefore he must be the father." Made by the mother's attorney.
Differentiate between biotechnology and bioengineering?
To how much extent skin color depends on genes?
Cystic fibrosis (CF) occurs with a frequency of about 1/2500 Caucasian newborns and is inherited as an autosomal recessive. A woman had an older sister die from complications of this disease. CF is not present among relatives of her husband. Both the woman and her husband have normal phenotypes. What is the chance this couple will have a CF child?
Suppose you are heterozygous for a mutant beta-thalassemia allele. If the frequency of beta-thalassemia is 1/1600 persons, what is the probabilty that your prospective spouse is heterozygous for a mutant beta-thalassemia allele?
Has vitamin c been produced in a human naturally before?
In hogs a gene that produces a white belt around the animal's body is dominant over its allele for a uniform body. Another independent dominant gene produces fusion of the hoof (syndactyly). Suppose a uniformly colored hog homozygous for syndactyly is mated with a normal footed hog homozygous for the belted character. What would be the phenotype of the F1? If the F1's interbreed, what would be the phenotypic ratio of the F2?
was math a subject in high school of difficulty for a person diagnosed with turner's syndrome?
In cucumbers normal leaves (N) are dominant to curled leaves (n) and elongated fruit (L) is dominant to spherical fruit and these genes are linked on the same chromosome. If a pure-breeding normal-leaved, elongated fruit cucumber is crossed with a curled-leaved, spherical fruit cucumber, what will be the phenotype of the F1? the phenotypic ratio of the F2?
