According to the segregation principle and fertilization process, the genotypes are CC (h0m0zyg0us dominant), Cc (heter0zug0us), or cc (h0m0zyg0us recessive). Phenotypes are curly wings, and straight wings .
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We know that curly wings is the dominant trait, while straight wings is the recessive one.
We may assume that this is a diallelic gene that expresses complete dominance.
- C is the dominant allele that codes for curly
- c is the recessive mutated form that codes for straight
According to the segregation principle, during gametes formation, the dominant and recessive alleles separate.
When mating, each individual contributes with a gamete. Each gamete carries one of these alleles.
According to the combination of the gametes during fertilization, the genotype of the progeny varies.
If two dominant alleles meet ⇒ CC h0m0zyg0us dominant genotype
Curly-winged individual
If a dominant allele meets a recessive one ⇒ Cc heter0zyg0us genotype
Curly-winged individual
If two recessive alleles meet ⇒ cc h0m0zyg0us recessive genotype
Straight-winged individual
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