When two heterozygous parents cross, the number of offspring that will have the recessive-recessive genotype is: 1.
What is a Recessive-Recessive Genotype?
A recessive-recessive genotype is a genotype that has two copies of a recessive alleles, which expresses the recessive trait.
If two parents are heterozygous for a gene, for example:
Aa × Aa
If they cross, the offspring produced will have the following genotypes:
AA, Aa, Aa, and aa.
The genotype, aa, is a recessive-recessive genotype.
Therefore, when two heterozygous parents cross, the number of offspring that will have the recessive-recessive genotype is: 1.
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