web quiz 19 - 1. Pattern formation in insects depends on...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1. Pattern formation in insects depends on the sequential activation of key groups of genes (see figure). Of the genes listed below, select the most specific gene group that is normally first to be activated in the fruit fly, Drosophila melanogaster, development. Gap genes Segment-polarity genes Homeotic genes Segmentation genes Pair-rule genes 2. Suppose a fruit fly has two sets of wings growing from its thorax (instead of a single pair of wings and a pair of haltares or balance organs). Where might there be a mutation in this fruit fly? Gap genes Segment polarity genes Homeotic genes Egg polarity genes Pair-rule genes 3. Researchers have found homeotic genes in humans, but they are not yet certain how these genes shape the human phenotype. Considering the functions of homeotic genes in other animals, which of the following is most likely to be their function in humans? Determining skin and hair color Regulating the cellular metabolic rate Determining that arms come off the upper portion of the torso and ears belong on the sides of the head...
View Full Document

Page1 / 2

web quiz 19 - 1. Pattern formation in insects depends on...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online