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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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rlee02135 rlee02135
wrote...
12 years ago
This has to do with Mendel and genetics.
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wrote...
#1
12 years ago
Because Ee and Rr represent two different alleles of the same gene.

However, a gamete only possesses one allele of a gene. So a gamete could only contain, for example, E or e, not Ee. Likewise, it could contain R or r, but not Rr.

Only when two gametes come together will they produce a zygote with 2 alleles for each individual gene.
wrote...
#2
12 years ago
Maybe I could explain more clearly.  E and e are two different alleles of the same gene, therefore all gametes will contain one of the two alleles.  The same is true of R and r.  So the four possible gametes are ER, Er, eR, and er.
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