what is the probability of the offspring having red - green color blindness for the cross that is…

Explanation:

Step1: Understand red - green color blindness inheritance

Red - green color blindness is an X - linked recessive disorder. Let $X^B$ be the normal allele and $X^b$ be the color - blind allele.

Step2: Analyze the Punnett square

The cross in the Punnett square has the following genotypes of parents: one parent with $X^B$ and $X^b$ and the other with $X^b$ and $Y$. The possible genotypes of the offspring are $X^BX^b$, $X^bX^b$, $X^BY$, $X^bY$.

Step3: Determine color - blind offspring

Offspring with genotypes $X^bX^b$ (female) and $X^bY$ (male) are color - blind. Out of 4 possible genotypes of the offspring, 2 are color - blind.

Step4: Calculate the probability

The probability is calculated as $\frac{\text{Number of color - blind genotypes}}{\text{Total number of genotypes}}=\frac{2}{4} = 0.5$ or 50 percent.

Answer:

50 percent