Meiosis

A chromosomal mutation that occurs when chromosomes do not separate correctly during meiosis. A gamete might end up with an extra or missing chromosome.

• karyotype

• non-disjunction

• tetrad

• gametogenesis

A chromosomal disorder where the affected person has three copies of chromosome 21 (trisomy 21)

• Oogenesis syndrome

• Turner's syndrome

• Kleinfelter's syndrome

• Down's syndrome

A picture of chromosomes in a cell. It is used to show chromosomal disorders.

• non-disjunction

• karyotype

• polar bodies

• tetrad

A condition that occurs in males when they have an extra X chromosome. It results in the presence of one extra copy of the X chromosome in each cell (XXY).

• Klienfelter's Syndrome

• Down's Syndrome

• Turner's Syndrome

• Spermatogenesis syndrome

A condition that only affects females, results when one of the X chromosomes (sex chromosomes) is missing or partially missing

• Down's syndrome

• Klinefelter's Syndrome

• Turner's syndrome

• Non-disjunction syndrome

A group of 4 chromatids or 2 duplicated chromosomes.

• autosomes

• tetrad

• diploid

• polar bodies

Cells in your reproductive organs (ovaries or testes) that develop into eggs or sperm

• germ cells

• somatic cells

• body cells

• meiosis

Tags

NGSS.HS-LS3-2

The process that occurs when homologous chromosomes cross and exchange genes.

• sex chromosomes

• tetrad

• crossing over

• meiosis

Body cells. Basically these are any cells not including sperm or egg.

• germ cells

• somatic cells

• gametes

• sister chromatids

Tags

NGSS.HS-LS1-4

This organism has 46 chromosomes. 22 pairs of autosomes and 1 pair of sex chromosomes.

• Goat

• Strawberry

• Dog

• Human

Tags

NGSS.HS-LS3-1