Biology 30 – Mitosis and Meiosis Practice Test

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Autosomes are chromosomes numbered what?

They include the sex chromosomes X and Y.

They are chromosomes numbered 1 through 22.

Autosomes are the non-sex chromosomes. In humans they are numbered from 1 to 22, meaning there are 22 pairs of autosomes (44 autosomal chromosomes) that are the same in both males and females. The sex chromosomes, X and Y, determine sex and are not autosomes. Because autosomes occur in both sexes and carry most of the genes, they’re distinguished from the sex chromosomes by their numbered naming.

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They are only present in males.

They determine an individual's sex.

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