In a bat population where 38% are recessive homozygotes, how many will have faint yellow spots?

Prepare for your Arizona State University (ASU) BIO345 Evolution Exam 1. Study with comprehensive resources, including flashcards and multiple-choice questions with hints and explanations. Ace your exam!

To determine how many bats will exhibit faint yellow spots in the population, knowing that 38% are recessive homozygotes, we start with understanding the relationship between genotype frequencies and phenotype frequencies in a population.

In genetics, we can represent the alleles at a particular locus, for instance, where "A" stands for the dominant allele and "a" represents the recessive allele. The phenotype in question, which includes the faint yellow spots, corresponds to the recessive homozygote genotype (aa). Thus, if 38% of the bats are recessive homozygotes (aa), we can say that 38% of the population will show the faint yellow spots phenotype.

To find the actual number of bats with faint yellow spots, we need to apply this percentage to the total bat population. While the total population isn't provided directly in the question, we can infer that the answer options represent whole numbers of bats presumed to be part of a larger population.

If we take the percentage of recessive homozygotes (38%), which is equivalent to 0.38, and apply it to a hypothetical total population reflecting the possibilities in the provided options, we can compute:

  1. If we assume the total population is such that 0
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