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Is zz a homozygous or heterozygous ​

User Krisztina
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Answer:

Homozygous recessive.

Step-by-step explanation:

When both of the letters are lowercased it represents a recessive gene, and two of the same letters same casing would be homozygous whereas, one uppercase and one lowercase would be heterozygous.

User Marko Taht
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