Describe the structure of a chromosome after it has been replicated.
Each chromosome is made up of two sister chromatids which are held together by a centromere.
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What is a diploid cell?
A diploid cell is a cell containing two complete sets of chromosomes, one set from each parent.
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What is a haploid cell?
A haploid cell is a cell containing only one set of chromosomes.
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What are homologous chromosomes?
Homologous chromosomes are pairs of chromosomes that contain the same genes but different alleles.
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How many chromosomes do human cells contain?
Human cells contain 46 chromosomes or 23 pairs of chromosomes.
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Which sex chromosomes do males and females have?
Males have X and Y, females have XX.
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