Biology test

The Chromosomes condense, and the nuclear envelope breaks down. Crossing-over occurs

prophase 1

Pairs of homologus chromosomes move to the equator of the cell

metaphase 1

Homologus chromosomes move to the opposite poles of the cells

anaphase 1

Chromosomes gather at the poles of the cells. The cytoplasm divides

telophase 1

A new spindle forms around the chromosomes

prophase 2

Metaphase 2 chromosomes line up at the equator

metaphase 2

Centromeres divide. Chromotids move to the opposite sides of the cells.

Anaphase 2

A nuclear envelope forms around each set of chromosomes. The cytoplasm divides.

telophase 2

prophase, metaphase, anaphase, telophase

what order do they go in?

The chromosomes cross over one another and then sections of the chromatids switch places

homologous

Contain two complete sets of inherited chromosomes (one from each parent) Rep by 2n. n\=23

Diploid

Contain only one set of chromosomes (one set of parent chromosomes) Rep by n. n=23

Haploid

Where genetic information used during sexual reproduction is divided

meiosis

Each replicated chromosome pairs with its corresponding homologous chromosome forming a \________. Have 4 chromatids

Tetrad

homologous chromosomes cross over one another and then sections of the chromatids switch places. This Increases genetic diversity and New combinations of alleles

crossing over

The diploid cell that results from fertilization

zygote

46 Chromosomes

Diploid

23 chromosomes

Haploid

how many times does cell division happen in meiosis

2 rounds

How many daughter cells are produced in meiosis 1

4

How many daughter cells are produced in meiosis 2

4

each replicated chromosome pairs with its corresponding homologous chromosome forming a tetrad;

What is synapsis