In flies, eye color is a sex-linked trait. Red eyes are dominant (XE) and white eyes are recessive (X). Consider the following 2 cases: 8) The female fly has white eyes and the male fly has red eyes. Figure out the percentage or ratio of possible genotypes and phenotypes of their offspring. Construct a Punnett Square first. Possible genotypes: Possible phenotypes: XE XE: Red Eyes: XE X°: Xe X°: XE Y: White Eyes: Xe Y: 751°F

Mutant female: yellow body and purple eyes.  Male: Normal 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 the Drosophila chromosomes 2, 3, and X, including…

The pedigree below shows a family affected by a disease. Assume that the individuals marked with an asterisk (*) do not carry any allele associated with the affected phenotype, no other mutation spontaneously occurred, and complete penetrance. Answer the following questions below. Use the notation XR for the allele associated with the dominant phenotype and Xr for the allele associated with the recessive phenotype. Q1) Give the genotypes for as many individuals in the pedigree as possible.

Label all individuals with the correct genotype. If you are not certain of the gentotype, list all possible geneotypes with their associated probabilities (based on the genotypes of their parents)

What is the approximate percentage chance that individual V.2, shown in the pedigree diagram below will have inherited the X- linked recessive allele shown to be carried by his great-great-grandmother? Note: only type the number, not the percentage symbol. Answer: The chance that individual V.2 shown in the pedigree below has inherited the X-linked recessive allele shown to be carried by his great-great grandmother is approximately Blank 1 percent. 노 ㅍ먹이 12 I 마일 메인 de 먹어 요 58 ㅁ + ܡܐ

Which of the Pedigree Diagrams below is most likely to show a family with Becker muscular dystrophy?

In this case a family history revealed a genetic basis for the disorder. The pedigree is shown in Fig. 1 Below. Key Ø Female: affected Female: unaffected || IV V 5600 orize 077808 15 10 9 10 CHO વ Male: affected Male: unaffected Deceased Disease status not given Dizygotic twins Monozygotic twins Fig. 1 Disease pedigree. Five generations I, II, III, IV, V are shown. Females are represented by circles, males by squares, dizygotic (non-identical) twins by diagonal lines originating from the same point, Monozygotic (identical) twins by diagonal lines originating from the same point and joined symbols and deceased by a diagonal line through the symbol. Filled symbols indicate that the individual displays the disease phenotype. Unfilled symbols indicate that the individual does not display the disease phenotype. Carriers of the disease are not indicated. Information on disease status is not known for generation I and is omitted for the individuals represented by a symbol with an asterisk.…

homozygous recessive: 3) Round seeds are dominant over wrinkled seeds in pea plants. Fill in the Punnett square and determine the expected genotypes and phenotypes of the F₁ generation by crossing homozygous recessive and heterozygous parents. J Possible genotypes of offspring: Possible phenotypes of offspring: Percentage of offspring that are round: % of offspring that are homozygous dominant: heterozygous: J j J j J j j J j J j Fi generation If there were 3500 seeds collected, predict how many would be round? Predict how many seeds would be homozygous dominant? homozygous recessive: % wrinkled: % % homozygous recessive: wrinkled? heterozygous? % %

A scientist is investigating the inheritance of two autosomal recessive genes in rat, ear length (long is dominant to short) and fur color (gray is dominant to white). The table below provides the number of observed off-spring for each phenotype, when heterozygous rats are crossed.  What are the expected values for each phenotype? Phenotype Observed Expected Long, gray 189   Long, white 56   Short, gray 74   Short, white 23   Total 342

Please help to fill in the table based on the chart located to the right.