Biology: Meiosis Review

What is a tetrad

A pair of homologous chromosomes

Different forms of a gene are called ________.

Alleles

When does interphase occur?

Before meiosis

When does DNA copy itself?

Before meiosis can occur.

Copies of chromosomes are held together by the _______.

Centromere

What happens to the chromosomes during prophase one?

Chromosomes condense and become visible.

What are homologous chromosomes?

Chromosomes that have the same size and the same genes.

In meiosis, the homologous pairs are represented by similar _______.

Colors

During meiosis 2, chromosomes line up again along the cell's ____________.

Equator

Each cell divides, forming a total of ______ cells.

Four

What are the final results after telophase two and cytokinesis?

Four haploid gametes are created

What happens to the chromosomes during anaphase one?

Homologous chromosomes split up and move toward opposite ends of the cell.

New membranes form around each ____ ________.

New nucleus

In meiosis, only _________ copy of each chromosome moves toward the poles. Which means only _________ chromosomes of the original six.

One Three

In meiosis, each chromosomes find its _________.

Partner

List the phases for meiosis one.

Prophase Metaphase Anaphase Telophase

List the phases for meiosis two

Prophase 2 Metaphase 2 Anaphase 2 Telophase 2

In meiosis, when chromosomes make copies of themselves, they _____________.

Remain attached to the original chromosomes.

What happens during anaphase two?

Sister chromatids split up

In meiosis, how many chromosomes does the cell in this animation start with?

Six

What's the difference between prophase one and prophase two?

Tetrads do not form in prophase two

What happens to the chromosomes during metaphase one?

Tetrads line up down the middle of the cell (also called the equator or metaphase plate.)

What occurs during interphase?

The cell does normal cell activities like making proteins.

How many chromosomes are at each pole of the cell in meiosis?

Two