Its so simple. Two alleles means three genotypes.
consider a gene has two alleles A(blue eyes) and a(brown eyes)
possible combinations:
1. AA - Homozygous dominant -Blue eyes.
2. Aa - Heterozygous - Blue eyes.
3. aa - Homozygous recessive - Brown eyes.
Hi this is consider breathing. Hope this helps.
A) A flap in the heart located between each atrium and ventricle.
Hope it helps! :)
Answer:
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Explanation:
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