Albino rabbits are rabbits that don't have any pigmentation in their fur or eyes. Their eyes appear pink and their fur appears pure white. The gene for albinism is a recessive gene. If an albino rabbit (bb) breeds with a brown rabbit (Bb), what is the percent chance that they will produce an albino rabbit?
A.
75%
B.
25%
C.
50%
D.
100%
The genotype of the albino rabbit is bb, while the genotype of the brown rabbit is Bb. To determine the percentage chance of producing an albino rabbit, we need to cross their genotypes.
The possible gametes for the albino rabbit (bb) are b and b.
The possible gametes for the brown rabbit (Bb) are B and b.
When crossing the genotypes, we can set up a Punnett square:
| B | b |
-------------------------
B | BB | Bb |
-------------------------
b | bB | bb |
From the Punnett square, we can see that there are two possible genotypes for the offspring: Bb (brown) and bb (albino).
Since the albino rabbit (bb) is homozygous recessive, when breeding with a brown rabbit, the percentage chance of producing an albino rabbit (bb) is 25% (1 out of 4 possible genotypes).
Therefore, the answer is:
B. 25%