You Are Given an Extract of DNA from Vernalized Winter

question 40

Multiple Choice

You are given an extract of DNA from vernalized winter wheat seeds and asked to decide if vernalization has gone on long enough for flowering to occur.In order to make this judgment,you would examine an extract of DNA under an electron microscope and look for

• A) signs of degradation.
• B) contamination with lipids.
• C) modified chromatin.
• D) extra protein coating the DNA.
• E) increased expression of FLC protein.

---

Definitions:

Olfaction

The sense of smell, a chemical sensing system that detects odor molecules in the environment.

Sense

A faculty by which the body perceives an external stimulus; one of the faculties of sight, smell, hearing, taste, and touch.

Refracted

Refracted refers to the bending of a wave, such as light or sound, as it passes through a medium, which changes its speed and direction.

Rounded

Pertaining to shapes or objects that have smooth curves or surfaces without sharp angles or edges.