The following letters indicate the pairs of alleles present on a homologous chromosome pair within an individual organism. Match each gene and determine whether it is homozygous dominant, homozygous recessive, or heterozygous... Dd jj RR Jj

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…

Ocular albinism is a sex-linked recessive disease carried on the X chromosome. A female carrier mates with a male with this disorder. What percentage of all of their children is predicted to be an albino female? 1) 0% 2) 25% 3) 50% 4) 75% 5) 100%

In humans, the gene for albinism (a) is recessive to the gene for normal skin pigmentation (A).    If two heterozygous persons have children, what is the probability they will have a child who is an albino?   What is the probability they will have a child that is a carrier of the recessive gene?

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

In human beings, the gene for red‑green colorblindness (r) is sex‑linked and recessive to its allele for normal vision (R), while the gene for freckles (F) is autosomal and dominant over its allele for nonfreckled (f).  A nonfreckled, normal‑visioned woman whose father was freckled and colorblind, marries a freckled, colorblind man whose mother was nonfreckled. What is the probability that the first child born to the couple will either be a freckled, colorblind boy or a non‑freckled, normal visioned girl or a non-freckled, normal visioned boy?   What is the probability that the first four children born to the couple will be freckled and normal visioned girls?

Which of the 6 modes is this pedigree and why? 1) Autosomal Dominant 2) Autosomal Recessive 3) X-linked Recessive 4) X - linked Dominant 5) Y-Linked 6) mt-Linked

What is the probability of Sister 3 as a carrier of the death gene?

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.…

Analyze the karyotype shown. Indicate if it is a chromosomal male or achromosomal female. If the karyotype is normal, write the word normal under name or description. If the karyotype is abnormal, name or describethe disorder.