Question

There are two alleles and 3 genotypes for the C gene locus (incomplete dominance). Individuals with different genotypes vary in their relative fitness. If the relative fitness of C1C1 individuals is 1.0, the relative fitness of C1C2 individuals is 0.9, and the relative fitness of C2C2 individuals is 0.8, which of these should result in future generations

Answer 1

Based on the relative fitness values, individuals with the C1C1 genotype (relative fitness of 1.0) should have the highest likelihood of being represented in future generations. C2C2 individuals (relative fitness of 0.8) would have the lowest likelihood, and C1C2 individuals (relative fitness of 0.9) would fall in between.

Step-by-step explanation:

The question is asking about the future generations resulting from individuals with different genotypes and relative fitness. In this case, there are two alleles (C1 and C2) and three genotypes (C1C1, C1C2, C2C2) for the C gene locus with incomplete dominance. The relative fitness of C1C1 individuals is 1.0, C1C2 individuals is 0.9, and C2C2 individuals is 0.8.

Based on the relative fitness values, individuals with the C1C1 genotype (relative fitness of 1.0) should have the highest likelihood of being represented in future generations. C2C2 individuals (relative fitness of 0.8) would have the lowest likelihood, and C1C2 individuals (relative fitness of 0.9) would fall in between.

To calculate the expected frequencies of the genotypes in future generations, you can multiply the relative fitness values by the current frequencies of each genotype. For example, if the C1C1 genotype currently makes up 20% of the population and its relative fitness is 1.0, the expected frequency of C1C1 individuals in the next generation would still be 20%. Repeat this calculation for each genotype to determine their expected frequencies in future generations.

Answer 2

The given question lack the choices of result that might come, however, the choices related to this question is as follows:

A. frequency of C1 will increase

B. frequency of C2 will increase

C. frequency of heterozygotes C1C2 will increase

D. frequency of both same alleles will increase

E. not enough information provided to predict

Answer:

The correct answer is - option A. Frequency of C1 will increase.

Step-by-step explanation:

In incomplete dominance, the relative fitness of heterzygous cases place always in between the other two allele genotype cases. In the given question, the relative fitness of C1C2 individuals is 0.9 between the relative fitness of C1C1 individuals is 1.0 and the relative fitness of C2C2 individuals is 0.8.

It is because there is no barrier to increasing the fitness of the more fit allele. The result of this is an increase in the fit alleles which is C1 here to reach equilibrium in the population.