how is it possible for an offspring to exhibit a recessive gene

Question

tanya123 · Answer

If both parents are heterozygous dominant. 

If the mom is Aa and dad is Aa, they both express phenotype A. 

however, they could each give the allele a to their offspring, producing an aa child. This child would possess the recessive a phenotype, while the parents express A. 

Genes must be Aa and Aa heterozygous like I said

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luigi0210 · Answer

In simplier terms, it needs to have two recessive genes in order for it to be exhibited. Like if it was Aa and Aa: |dw:1408752764546:dw|

Out of 4, there would be a 25% of a child being recessive (aa)

AA- Dominate
Aa- Dominate (Because the A conquers the a in what gets expressed)
aa- Recessive (There is no A to mask it so the recessive gets a chance to be expressed)