sy,February 22, 2018) 1. If one parent has type B blood and the other has type A
ID: 199080 • Letter: S
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sy,February 22, 2018) 1. If one parent has type B blood and the other has type A, what blood types might the child have? a, Aor B b. A, or B, or AB A, or B, or 0 A, or B, or O or, AB Which of the followings is impossible? à. An O child from two A parents b, An O child from an A parent and a B parent 2. An AB child from an A parent and an O parent An A child from an AB parent and a B parent 3· The allele (H) for Huntington disease is dominant lethal allele, which of the following genotypes will cause death? a. b. Hh © Both HH and Hh 4. In rabbits, C -agouti coat color, oth chinchilla, ch Himalayan, and c - albino. The four leles constitute a multiple allele series. The agouti C is dominant to the other three alleles, c is recessive to the other three alleles, and chinchilla is dominant to Himalayan. Determine the phenotypes of progeny from the following cross. CC x c'ch a. Agouti b. Agouti and albino Chinchilla and albino Himalayan and albino e. Albino t type blood An A type person can receive blood from a person with a. 5. b. A or B Aoro A or AB A or O or AB d. e. t coat color, cth chinchilla, ch Himalayan, and c albino. The four r dnminant to the other threeExplanation / Answer
AS PER CHEGG POLICY, PROCEEDING TO ANSWER ONLY THE FIRST 4 QUESTIONS/SUBPARTS, THAT IS, QUESTIONS 1 TO 4:
ANSWER 1.
If Parent P1 has Type B Blood Group = iBiB or iBi0
If Parent P2 has Type A Blood Group = iAiA or iAi0
P1 gametes = iB&i0
P2 gametes = iA&i0
Hence, all progeny = iAiB , i0iB, iAi0 , i0i0
d. A, or B, or O, or AB
ANSWER 2.
The following is impossible:
c. An AB child from an A parent and an O parent
This is because If Parent has Type A Blood Group then = iAiAor iAi0
If Parent has Type O Blood Group = i0i0
Then only Blood Types A or O or possible, and not AB.
ANSWER 3.
The allele (H) for Huntington disease is a dominant lethal allele, the genotypes that will cause death:
c. Both HH and Hh
This is because a dominant lethal allele is represented in uppercase letter and having even one copy of it is enough to represent its lethality.
ANSWER 4.
If Parent P1 has genotype = CC
If Parent P2 has genotype = chch
P1 gametes = C
P2 gametes = ch
Hence, all progeny = Cch
Since C is dominant over ch
Hence phenotypes of progeny
a. Agouti
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