Determine the correct order of the genes on the chromosome, given the following information: Genes A and T cross over at a rate of 18% Genes M and T cross over at a rate of 9 % Genes A and H cross over at a rate of 11% Genes M and H cross over at a rate of 2% a. TMAH b. AMHT c. MATH d. TAMH

b. AMHT

Explanation:

The arrangement of genes on a chromosome can be estimated by considering the distance between the genes using the rate or frequency of their cross overs. Therefore, we have:

A18T

                        M9

11H

                          ---2---

Thus, using the arrangement above by selecting the letters as they occur, we have:

AMHT as the correct genes arrangement in the chromosome.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

the answer is c because it is most logical.