Question

question 9 of 10
the table shows the chromosome numbers for four different organisms.
which organism can produce the highest number of genetically varied
gametes as a result of independent assortment?
a. gypsy moth
b. chicken
c. human
d. strawberry

Explanation:

Step1: Recall formula for genetic variation due to independent assortment

The number of genetically varied gametes due to independent assortment is \(2^{n}\), where \(n\) is the haploid number of chromosomes.

Step2: Calculate haploid number (\(n\)) for each organism

• Chicken: Diploid number \(= 78\), so \(n=\frac{78}{2}=39\)
• Gypsy moth: Diploid number \(= 62\), so \(n = \frac{62}{2}=31\)
• Human: Diploid number \(= 46\), so \(n=\frac{46}{2} = 23\)
• Strawberry: Diploid number \(= 56\), so \(n=\frac{56}{2}=28\)

Step3: Compare \(n\) values

Since \(39>31 > 28>23\), chicken has the highest \(n\) value. And since the number of gametes is \(2^{n}\), higher \(n\) means more gametes. So chicken can produce the highest number of genetically - varied gametes due to independent assortment.

Answer:

B. Chicken