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Biology, 28.01.2021 19:00 cyndy50

Humans may have type 0, A, B, or AB blood. This blood type is a trait that is determined by - a. a double crossover on the X chromosome
b. multiple alleles
c. genes on Y chromosomes only
d. three homologous chromosomes
PLEASE PLEASE PLEASE HELP

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Humans may have type 0, A, B, or AB blood. This blood type is a trait that is determined by - a. a...
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