The following diagram shows sex determination | vedclass

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(A) In honeybees,sex determination is based on the number of sets of chromosomes an individual receives. Females are diploid $(2n = 32)$ and males are

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$16 \quad 16 \quad 32$

Vedclass · Answer

(A) In honeybees,sex determination is based on the number of sets of chromosomes an individual receives. Females are diploid $(2n = 32)$ and males are haploid $(n = 16)$.$1$. The female (queen) produces eggs through meiosis,so each egg has $n = 16$ chromosomes.$2$. The male (drone) produces sperms through mitosis,so each sperm has $n = 16$ chromosomes.$3$. $Q$ represents the sperm produced by the male through mitosis,so $Q = 16$.$4$. $P$ is a male produced from an unfertilized egg (parthenogenesis),so it retains the haploid number,$P = 16$.$5$. $R$ is a female produced from the fertilization of an egg $(16)$ by a sperm $(16)$,resulting in a diploid zygote,so $R = 16 + 16 = 32$.Therefore,$P = 16, Q = 16, R = 32$.

The following diagram shows sex determination in honeybees. How many chromosomes do $P, Q,$ and $R$ have?
$\quad\quad P \quad Q \quad R$

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The following diagram shows sex determination in honeybees. How many chromosomes do $P, Q,$ and $R$ have?$\quad\quad P \quad Q \quad R$