Consider the following cross aaBb x Aabb A=Black Hair a= White Hair A and a have a codominant relationship B=Blue Eyes b=Yellow Eyes B and b have an incomplete dominance relationship The parent population does not contain Black & White-haired individuals with green eyes. Question 13 options: TrueFalse
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1.The eye color gene has two alleles: the dominant "B" (brown) and the recessive "b" (blue). Let's say that a mother has the genotype Bb and the father the genotype bb. Draw a punnet square and determine what percentage will have have which genotype. A. 50% BB 50% bb B. 75% Bb 25% bb C. 50% brown eyes 50% blue eyes D. 50% Bb 50% bb 2. If two parents both have the phenotype brown eyes, but have some children with blue eyes, what is the likely genotypes of the parents? A. Both parents have the genotype bb B. Both parents have the genotype BB C. One parent has the genotype BB the other has the genotype Bb D. Both parents have the genotype Bb 3. Evolution is change in gene (allele) frequencies in populations over time. TURE OR FALSE 4. When two formerly separate breeding populations come together and exchange genes through mating, then gene flow has occurred. TRUE OR FALSE
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1.) In poison dart frogs, the spot color is inherited by incomplete dominance. SS individuals have blue spots, ss individuals have yellow spots, and Ss individuals have green spots. You cross two frogs with green spots. How many of their offspring will have blue spots? (percent or fraction) 2.) Wolves are sometimes observed to have black coats and blue eyes. Assume further that normal coat color (N) is dominant to black (n) and brown eyes (B) are dominant to blue (b). Suppose the alpha male of this pack is homozygous for normal coat color and blue eyes, and the alpha female of this pack is homozygous for black coat color and homozygous for brown eyes. What will the genotype of their offspring be? A.) NnBb B.) NNBB C.) nnBB D.) NNbb
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(a) A man who is heterozygous for brown eyes marries a woman who is homozygous for blue eyes and they have four children (F1). Half of the children are brown eyed and another half are blue eyed. Using the B for brown eyed and b for blue eyed, i. Identify the genotype of the parent. ii. If a brown eyed man in F1 marries a woman and produces F2 offspring with the phenotype ratio 3:1, identify the genotype of the woman. iii. Draw a genetic diagram to show this marriage until F2 generation. (b) A woman with group A blood marries man with group B blood. Their child has group O blood. i. What is meant by multiple alleles? ii. State the genotypes for woman, man and child.
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