Meiosis

Meiosis

Process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell

Tetrad

A structure that contains four chromatids

Gamete

Sex cells

Gonad

An organ that produces gametes (Sex cells)

Chromatid

The DNA strands in the duplicated chromosome (Sometimes called chromatids)

Chromosomes

Packages of DNA. Gentic information in bundled into these packages

Gene

Factors that are passed fr

Allele

The different forms of genes

Sister chromatids

exact copies of a chromosome that are linked by a centromere. (same genes, same alleles)

Homologous Chromosome

a pair of chromosomes that code for the same traits but are not identical. (same genes, different alleles.

Haploid

A cell that contains only one of the homologous chromosomes

Spermatogenesis

A sperm goes through meiosis as described before, with 4 sperm cells resulting in spermatgenesis

Diploid

Cells that contain both sets of homologous chromosomes

Nondisjunction

Tetrads do not split where they should in meiosis 1 or sister chromatids do not split when they should in meiosis 2.

Oogenesis

In the formation of eggs, only one egg is formed.

The other would be eggs form into “polar bodies” and do not mature.

Centromere

GOLLY