Eyelash length is an inherited trait. In the human population, there is an eyelash length gene. There are two possible variants of this gene-an allele for long eyelashes (> 1cm) and an allele for short eyelashes (1 cm or less). The allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l). An individual who is heterozygous for eyelash length would produce which of the following gametes?
A. Half of the gametes would have the L allele and half of the gametes would have the l allele.
B. All gametes would have the l allele.
C. The proportion of gametes receiving each allele would be random; the process of meiosis is very disorganized and chromosomes are not separated in an ordered fashion.
D. All gametes would have the L allele.
E. None of the gametes would have the eyelash gene; gametes do not have eyelashes.
Answer: A
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Refer to the figure above. In their investigation of natural selection on Mc1r alleles (the gene that determines coat color) in Arizona pocket mice, Hoekstra et al. determined the frequency of the D and d alleles in each population
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