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Home Q & A Board Science-Related Homework Help High School Level Science
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10 years ago
19. The colour of eyes is determined by a gene on X chromosome with two alleles . X^R= red eyes; X^r = white eyes. Cross a red-eye male with a white- eyed female. Show the genotypes and phenotypes including the sex, of the parents and offspring
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#1
10 years ago
You are cross a red eye male with a white eye female. Males are XY and females are XX. Now, based on the alleles, the male would be X^R Y since he has red eyes, the female would be X^r X^r since she has white eyes - a homozygous recessive genotype. Crossing the two would give you two heterozygous females (X^R X^r) and two white-eyed males (X^rY).
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#2
10 years ago
Exactly. You yill need to actually make the cross so that you can the the outcomes and to better understand this topic. The table will answer all your questions
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