Chapter 10.1, Problem 1NV

Use the terms in the left margin to complete the paragraph below.

A segment of DNA on a chromosome that controls the production of a protein is called____. A____ cell contains two copies of each chromosome. A sex cell, or____, is ____, meaning it contains one copy of each chromosome. _____ are pairs of chromosomes, one from each parent.
Describe three processes that occur during sexual reproduction.

Summary Introduction

To Fill:

The given blanks with the correct vocabulary term.

Answer to Problem 1NV

The given blank can be filled as follows:

Blank number	Term
1	Gene
2	Diploid
3	Gamete
4	Homologous chromosomes

Explanation of Solution

A part of chromosome that codes for a particular protein is known as a gene. A diploid cell contains two sets of each chromosomes. A sex cell or a gamete is haploid, which means it contains only a single set of chromosomes. Homologous chromosomes are identical chromosome received by each parent.

Summary Introduction

To describe:

The process of meiosis, fertilization and crossing over.

Explanation of Solution

Description of the processes during sexual reproduction is as follows:

	Meiosis	Fertilization	Crossing over
What happens?	It is a type of reductional cell division, in which a diploid cell divides to form haploid cells.	It is process o fusion of male and female gamete.	It is the process of exchange of genetic material between two homologous chromosomes.
What is the product?	The product is haploid gamete.	Fertilization leads to formation of zygote.	It leads to formation of recombinant chromosomes.