Question

A male and female bison that are both heterozygous for normal skin pigmentation (Aa) produce an albino
offspring (aa). Which of Mendel's principles explain(s) why the offspring is albino?
a. dominance only
c. dominance and segregation
b. independent assortment only
d. segregation only

Answer 1

Ok, do you have to select only one correct option or you can select more than one?

Answer 2

just one

Answer 3

ok, What do you think it should be?

Answer 4

d

Answer 5

no c

Answer 6

Let's see what dominance and segregation means.

Out of two only one allele is able to express itself and is known as dominant allele. Another allele fails to express and is called as recessive. It is able to express itself only when present in homozygous condition.

Second thing is Law of segregation, which says that during gamete formation the alleles segregate randomly and transfer inside different gamete. Each gamete recieves only one allele of a pair.

Answer 7

So what happened in this case?

Parent (Aa) had normal skin since A was dominant over a. When Aa was crossed with another Aa, both the alleles segregated randomly and formed two gametes i.e A and a.
and finally when the male gamete having allele a fused with another female gamete also having allele a, offspring having a genotype aa was produced. Now as discussed earlier since it is homozygous recessive condition, albino was formed.

Answer 8

GEtting it?

Answer 9

Ask if it's unclear..