3rd October 2019

britannica
17

What is the polyploidy?

Polyploidy. genetics. Polyploidy, the condition in which a normally diploid cell or organism acquires one or more additional sets of chromosomes. In other words, the polyploid cell or organism has three or more times the haploid chromosome number.

Why polyploidy is rare in animals?

The purpose of this article is to offer an alternative explanation of the rarity of polyploidy among animals. As shown below, polyploidy may be rare among animals because they often possess a degenerate sex chromosome and common among plants because they rarely possess a degenerate sex chromosome.
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