Cell Division and Chromosome Number

Question 1

Organisms that are the result of sexual reproduction have two sets of chromosomes. One from each _____.

Answer 1

Parent

Question 2

The sets of chromosomes from each parent are called _____ chromosomes.

Answer 2

homologous

Question 3

What are homologous chromosomes?

Answer 3

The two copies of each chromosome, one from the mother and one from the father.

Question 4

Homologous chromosomes carry the same gene, but they may have different _____ of that gene.

Answer 4

expressions

Question 5

What does diploid mean?

Answer 5

Diploid means that there are two of each kind of chromosomes in each cell.

Question 6

What is the diploid symbol?

Answer 6

2N

Question 7

What do diploid cells contain?

Answer 7

Two complete cells of chromosomes

Question 8

Egg and sperm cells must have half the number of chromosomes so that when added together, the _____ will have the proper number.

Answer 8

zygote

Question 9

Gametes are said to be haploid or 1N because they contain _____ kind of each chromosome.

Answer 9

one

Question 10

Cells that produce gametes are diploid. So how do the gametes get to be haploid?

Answer 10

Meiosis

Question 11

What is meiosis?

Answer 11

A process of reduction division in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes.