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For example, in humans, one type of leukemia and some other cancers are caused by defective chromosomes made up of joined pieces of broken chromosomes.
In the past, there wasn't much evidence supporting the idea that X-chromosome inactivation occurred due to dosage compensation. Each "human body cell" has 46 chromosomes. This ensures that both sexes always have exactly one functional copy of the X chromosome in each body cell.
Chromosomes are usually arranged in a karyotype, how many chromosomes human sex cell in Gympie homologs are shown side by side. The genetic architecture suggests that either the Y chromosome has an X-inactivating gene, or that the Y h chromosome has an X-activating gene.
Human genome. What is the lewis structure for hcn? In humans sex cells contain Sex chromosomes have evolved independently across many plant groups. This is useful for identifying some human disorders. Asked By Otis Rolfson. Description Transcript Keywords Info Take a look at human chromosomes.
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Description Transcript Keywords Info Take a look at human chromosomes. Females have two X chromosomes in their cells, while males have one X and one Y chromosome.