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kvasek [131]
3 years ago
8

12.

Biology
1 answer:
r-ruslan [8.4K]3 years ago
8 0

Answer:

d

Explanation:

The tetrad is formed by synapsis of homologous chromosomes.

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Heterozygous A: AO (remember, O type blood is a recessive allele. It's masked by A)

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AO x BB --> AB, BO

Therefore, the genotypes of their offspring will be 1 AB to 1 BO, while the phenotypes will be 1 AB blood to 1 B blood.

I hope this answer helps you find what your looking for! :)

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forgive me if i am wrong, have a nice day! :)
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