To maintain heterozygotes of this organism, balancer chromosomes are used to prevent crossing over during meiosis.
To maintain heterozygotes of this organism, balancer chromosomes are used to prevent crossing over during meiosis. "Puffs" are uncoiled areas in this organism's polytene chromosomes, which are comprised of many pairs of sister chromatids that remain synapsed together. Mutations of this organism's hox genes include ultrabithorax, and they were used to demonstrate that genes are the basic units of heredity. Sex-linked characteristics were used to explain the white and red eyes of these organisms, which were studied by Thomas Hunt Morgan. They can experience mutations in which their antennae are replaced by legs. For 10 points, name these insects that are considered model organisms.
To maintain heterozygotes of this organism, balancer chromosomes are used to prevent crossing over during meiosis.
Drosophila melanogaster [accept fruit flies] &lt;AT&gt;