Predict the potential effect of the Lyon hypothesis on the retina of a human female heterozygous for the X-linked red-green color blindness trait.

Red–green color blindness is caused by an X-linked recessive genetic defect. Hence females rarely exhibit the red–green colorblind phenotype but may be carriers of the defective gene. When a narrow beam of red or green light is projected onto some areas of the retina of such a female carrier, she can readily diff erentiate the two colors, but on other areas she has diffi culty in doing so. Explain.

Using the link provided. Mate two flies. a male is a wild type and a female has yellow body and purple eyes.  Use: https://www.sciencecourseware.org/FlyLabJS/   Which mutant alleles are dominant? Which mutant alleles are recessive?   Which mutant alleles are sex-linked? Which mutant alleles are autosomal?   Can you tell at this point if the two genes are linked?   Show the results of the dihybrid analysis.  Are genes segregating independently? What is the evidence for or against this?   Show the crosses you will use to obtain the mapping data.   For the mapping crosses, Write out the crossing scheme and make a table of the results (ignore sex in this table, combine the male and female progeny). Identify the parental classes and the recombinant classes. For a 3-point cross, identify the double cross overs. Show your calculations for the recombination frequencies between the three genes (for the 3-point cross) or the two genes (for the two-point crosses).     Draw a map of…

Predict the probability (using a Punnett square) of producing an offspring affected by a single gene X-linked mutation given the genotype of the parents. Compare these crosses in two cases: where the mutant allele is “A” vs where the mutant allele is “a” (XAXA x XaY) (XAXa x XAY) (XAXa x XaY) (XaXa x XAY) (XaXa x XaY). Include gender in the phenotype.