Answer to Question #83376 in Genetics for Daysia Sturdivant
The Y chromosome is one of two sex chromosomes in mammals, including humans. It contains the SRY gene responsible for developing the testicles, determines inherited characteristics. The Y chromosome is always transmitted from father to son in unchanged form. A male receives Y chromosome from father and X chromosome from mother. Since the Y chromosome is represented by a single copy, it is not modified during the chromosomal crossover.
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