Answer Happy

Yellow (Y) is dominant to green (y), and round (R) is dominant to wrinkled (r) in pea seeds. Pure breeding PO pea plants were mated to generate F1 pea plants heterozygous for the Y and R genes. The heterozygous F1 pea plants were test-crossed and the F2 pea seeds were analyzed for seed color and seed shape. a.) If the Y and R genes are on different chromosomes, what % of F2 progeny would be: yellow and round yellow and wrinkled green and round green and wrinkled The data of F2 progeny with different phenotypes below instead suggest that the Y and R genes are linked together on the same chromosome. Use the data to answer part b and c. 230 seeds are yellow and wrinkled 34 seeds are yellow and round 252 seeds are green and round 36 seeds are green and wrinkled b.) What is the correctly written genotype for the heterozygous F1 peas? c.) What is the distance in map units between the Y and R genes? a.) Non-homologous end joining is a last resort of repairing broken chromosomes. b.) All DNA damage is processed the same. c.) Genetic complementation can be used to identity recessive alleles. d.) The environment can influence sex determination in turtles. e.) Cancer is often the product of an accumulation of mutations. f.) Non-Mendelian traits can have more than two alleles of a gene. g.) The cell cycle is not regulated during normal growth. h.) Hypermorphic mutations are common.
Shown below is results of a DNA Sanger sequencing reaction from an individual's genome. Each band represents a location where the indicated dideoxy terminator halted DNA replication. a.) Write the DNA sequence that was produced from this sequencing reaction. Indicate the correct orientation of the DNA sequence. b.) Draw in the gel what you could observe if the individual was heterozygous at the 5th nucleotide of the sequencing reaction. c.) If this 5th nucleotide position widely varied among the population, you would most likely classify this sequenced heterozygous location as a (circle 1): RFLP SSR missense SNP mutant deletion frameshift dominant True or False a.) Mutant alleles are always recessive. b.) Conditional mutants express their phenotypes under certain conditions. c.) Some alleles can have more than 1 phenotype. d.) It is possible for some loss of function mutations to have a dominant phenotype. e.) Certain cancers can have sporadic or familial forms. You are studying a height trait in diploid plants that is controlled by a single gene, T. The plants show the following incomplete dominance phenotypes: tall (3 feet), medium (2 feet), or short (1 foot). Medium height plants are not true breeding, but the other phenotypes are. Assume there are only 2 alleles of the T gene. a.) Write the genotype of a cross that will produce all medium sized F1 progeny. b.) If you cross two medium plants together, how many plant progeny out of 100 do you expect to be tall, medium, and short? c.) You observe a rare plant that is very tall (4 feet) and hypothesize that this rare plant is triploid for the functional allele. How does the triploid genotype explain the very tall phenotype? ddATP ddTTP ddCTP ddGTP