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Genes and Chromosomes Worksheet | PDF - Free Printable

Educational worksheet: Genes and Chromosomes Worksheet | PDF. Download and print for classroom or home learning activities.

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- (a) When chromosomes appear as double strands, they are in their replicated form, having duplicated during the S phase of interphase in preparation for cell division. Each chromosome consists of two identical sister chromatids joined at the centromere.
- (b) Humans have 46 chromosomes (23 pairs), while cats have 38 chromosomes (19 pairs). Therefore, humans have more chromosomes than cats.
- (c) The human is male (XY sex chromosomes), and the cat is female (XX sex chromosomes).

Parent Tip: Review the logic above to help your child master the concept of chromosome worksheet.

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