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Consider the many organisms we have discussed and others in nature regarding the determination of sex....

Consider the many organisms we have discussed and others in nature regarding the determination of sex.

  1. Why are there so many different ways to determine sex?
  2. Can a drone be a female? Why or why not?
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Answer #1

A: Sexual reproduction is an ancient feature of life on earth, and the familiar X and Y chromosomes in humans and other model species have led to the impression that sex determination mechanisms are old and conserved. In fact, males and females are determined by diverse mechanisms that evolve rapidly in many taxa. Yet this diversity in primary sex-determining signals is coupled with conserved molecular pathways that trigger male or female development.

B: No, drone cannot be female bcoz drone consist of sperm.Drones carry only one type of allele at each chromosomal position, because they are haploid .The result is a haploid egg, with chromosomes having a new combination of alleles at the various loci.

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