What is the probability that a man type AB blood and a woman with type A blood,
ID: 89446 • Letter: W
Question
What is the probability that a man type AB blood and a woman with type A blood, whose mother is type O, would produce a child that is (Answer all four parts): a. Type A b. Type AB c. Type O d. Type B Coat color in Labrador retrievers is governed by two genes: black/brown and a second epistemic gene that determines if pigment Is deposited or not. Black (B) is dominant to brown (b), and in the second gene E is dominant to e. If the pigment deposition gene is homozygous recessive (ee), the dog is golden regardless of the genotype of the black/brown gene. This is somewhat similar to hair color in humans. Two brown labs are mated and the litter includes some golden puppies. a. What are the genotypes of the parents? b. What is the probability that these patents will have i. Black lab puppies? ii. Brown labs? iii. Golden labs? c. In a litter of 12 puppies how many would be expected to be each color?Explanation / Answer
ANSWER 2:
Genotype of father with blood type AB – IAIB
Genotype of woman with blood type A whose mother is type O – IAIO
Genotypes of offsprings of the parents with the above genotypes IAIB and IAIB :
Parents
IA
IB
IA
IAIA
Blood type A
IAIB
Blood type AB
IO
IAIO
Blood type A
IOIB
Blood type B
Hence as per the above table, the probability of blood type of children born to these parents are as follows:
EPISTASIS ANSWER:
Allele responsible for Genotype of black fur – BB or Bb
Allele responsible for Genotype of brown fur – bb
Allele responsible for Genotype of golden fur - ee
According to the question, 2 brown labs are mated and have some golden litters
Hence,
Parents
E_b_
_eb_
E_b_
EEbb
Brown fur
Eebb
Brown fur
_eb_
Eebb
Brown fur
eebb
Golden fur
3. Total number of puppies = 12
Hence, number of black puppies – Zero
Number of brown puppies = 75% of 12 = 9
Therefore, 9 puppies will have brown fur color
Number of golden puppies= 25% of 12 = 3
Therefore, 3 puppies out of 12 will have golden fur
Parents
IA
IB
IA
IAIA
Blood type A
IAIB
Blood type AB
IO
IAIO
Blood type A
IOIB
Blood type B
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.