Question

consider the genetic cross for fur color. what is the probability that the offspring of this cross will have black fur? a 25% b 50% c 75% d 100%

Explanation:

Step1: Count total outcomes

There are 4 possible genotypes in the Punnett square: \(BB\), \(Bb\), \(Bb\), \(bb\). So total number of outcomes \(n = 4\).

Step2: Count favorable outcomes

Black fur is determined by genotypes \(BB\) (homozygous dominant) and \(Bb\) (heterozygous). The number of favorable genotypes: \(BB\) (1)+\(Bb\) (2) = 3.

Step3: Calculate probability

Probability formula is \(P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\). So \(P=\frac{3}{4}= 0.75 = 75\%\).

Answer:

C. 75%