Coat color in mice is influenced by two genes, one for color (A) and one for the amount of pigment production (C). Mice with the wild type agouti coat color have a yellowish to brownish color. Mice also have a gene that determines the amount of pigment the hair produces.

Dihydrid Cross

Four coat color phenotypes occur in mice, Cream (C), Brown (R), Gray (G) and Black (B). Use the following crosses to determine the dominance sequence of the alleles and indicate the parental genotypes. Cross Parent Phenotype |Offspring Parental Genotypes Gray X Black 10 Gray 2 Black X Cream 5 Black, 5 Brown 3 Brown X Brown 7 Brown, 3 Cream 4 Gray X Brown 5 Gray, 5 Black

The e-gram (graph to the right of allelic ladder image) and above is from a woman. She has variations 14 and 15 at STR D3S1358. If she has children with a man who has variations 12 and 19 at the same STR, what are the possible combinations of variations that their children would have?

Based on the information shown in the chart above, what is the most likely inheritance pattern for the 'forked bristles' trait? why?

A researcher is interested in whether a disease gene is linked to an RFLP marker. A cross is made between pure breeding blind cavefish and pure breeding sighted cavefish. The lines are pure breeding. The resulting RFLP markers of the F1 offspring and the F2 (from an F1XF1 cross) offspring are shown.       If the disease gene is 10 m.u. from the RFLP marker, what proportion of the F2 will have the gel pattern shown above AND be blind? Show your work    If the disease gene is 10 m.u. from the RFLP marker, what proportion of the F2 will have the gel pattern above AND NOT be blind? Show your work

Yellow Spotted Marker 1 Marker 2 Marker 3 Marker 4 Black K8 KB KE KB I. Marker 1 Marker 2 Marker3 Marker KB k III. 1 7 8. 10 11 12 Marker 1 Marker 2 Marker 3 Marker 4 KB. -KB Gene K controls fur color and it has three alleles: B, s, and y. The pedigree shows the genotypes of the individuals in the K gene and the haplotypes for the four molecular markers in the region of the gene. a) what is the relationship between the three alleles? Use the pedigree to support your answer and refer to individuals by their positioning in the pedigree b) based on the pedigree and the haplotype at the four markers, where is gene K located? Support your answer. c) A genetic map of the 4 markers studied is shown below: Marker 1 Marker 2 Marker 3 Marker 4 JU 5 cM 6 cM 12 cM What is the probability that an offspring of a cross between l-1 and I-2 would have the haplotype below? Show your work. 3 1 1 1 1

Which of the following statements about the pedigree shown below is FALSE? 2 II 3 II 2 3 4 The phenotype of individual II-3 is affected. The genotype of individual Il-1 could be Aa or AA. Genotype of individual Il-3 is AA. Genotype of individual Il-2 is aa. 2.

An otto hemp variety with the genotype RRbb is crossed with a Kush hemp  variety rrBb (Given that RR is homozygous resistance to mildew, BB is homozygous large buds). Which of the following shows the correct alleles that are crossed? Rb, Rb, Rb, Rb X RB, RB, Rb, Rb Rb, Rb, Rb, Rb X rB, rB, rb, rb Rb, Rb, Rb, Rb X RB, RB, Rb, Rb RB, RB, Rb, Rb X RB, RB, Rb, Rb

ABO blood group is co-dominant for AB and O is recessive. Rh (+/-) factor is completely dominant. A man with O/positive blood and a woman with A/negative blood have six children. All of their children have A + blood type. What can you conclude about the parents’ genotypes? Group of answer choices Both mother and father are likely homozygous  at both loci Mother was homozygous at the ABO locus but heterozygous at the Rh factor locus Father was homozygous at the ABO locus but heterozygous at the Rh factor locus Mother was heterozygous at both loci