Multiple Alleles: 1. The basic blood types of humans are A, B, AB, and O. Types
ID: 90512 • Letter: M
Question
Multiple Alleles:
1. The basic blood types of humans are A, B, AB, and O. Types A and B are both dominant and type O is recessive. If a man with type A blood (heterozygous) has children with a woman who has type B blood (heterozygous), what are the possible genotypes and phenotypes of the progeny? Please include allele codes and a punnet sqaure.
2. In rabbits Black fur is the most dominant and white is recessive. However, there are four phenotypes of fur colors that follow these inheritance patterns. Black (F) > Chinchilla (F^ch) > Himalayan (F^h) > White (f).
a) The following two rabbits are crossed, what are the possible phenotypes and genotypes of their offspring? Please include allele codes and punnet sqaure. F^chF^h X Ff
b) The following two rabbits are crossed, what are the possible phenotypes and genptypes of their offspring? Please include allele codes and punnet square. FF^h X ff
c) A black rabbit is crossed with a Himalayan and the F1 consists of a ratio of 2 black to 2 chinchilla. Determine possible genotypes of the parents.
Explanation / Answer
1. Man with type A blood (heterozygous) AO x BO Woman with type B blood (heterozygous)
Punnet square :
Possible genotypes and phenotypes :
AB : AB blood group
AO : A blood group
BO : B blood group
OO : O blood group
2 a) F^ch F^h X F f
Black (F) > Chinchilla (F^ch) > Himalayan (F^h) > White (f)
F^ch F^h (Chinchilla) X F f (Black)
2b) FF^h X ff
2c) A black rabbit is crossed with a Himalayan rabbit :
When Black (FF^h) and Himalayan (F^hF^h) rabbits are crossed, the following result will give 2 : 2 ratio
A O B AB BO O AO OORelated Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.