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You are investigating 4 recessive alleles in corn. They are whimpy ears (w), striped leaves (s), shriveled kernels (k), and red tassels (r). Their dominant counterparts are generally just represented by the "+" symbol. A plant that is homozygous dominant for all 4 genes is crossed with a homozygous recessive plant (ww ss kk rr). As expected, the f1 generation displays the dominant phenotypes for all 4 genes. The f1 plants are then crossed with a homozygous recessive plant for all 4 genes. A total of 1000 f2 offspring are produces. These f2 offspring display the following phenotypes:wskr (198)++++ (202)wsk+ (201)+++r (199)w+k+ (49)+s+r (51)w+kr (48)+s++ (52)note: (no recombinants, virtually no crossing over)
a- Calculate the recombination frequencies between each of the four genes.
b- Draw a genetic map for the location of these 4 genes on the chromosome. Be sure to show the map distances between the loci.
The molecular weight of "Y" is two hundred. I use 10g of "Y" in 10mL of water. What is the molarity of this solution of "Y"? What percentage solution of "Y" is it?
Verify the listed specific committed effective dose-equivalent, HE per unit intake, is 8.63 E-9 Sv/Bq. Find the most limiting ALI.
A snapdragon with pink petals, black anthers and long stems was allowed to self-fertilize. From the resulting seeds, 650 adult plants were obtained.
At another locus, sepia eyes are inherited as an autosomal (non sex linked) recessive. The presence of the white eye phenotype (x superscript w x superscript w in females, x superscript y in males) masks sepia phenotype, so regardless of the sepia ge..
Draw a phylogenetic tree of photosynthetic organisms. Include the following in your tree: angiosperms, photosynthetic bacteria, non-photosynthetic bacteria, animals, photosynthetic protists, non-photosynthetic protists, gymnosperms, monocots, bryo..
Few decades ago, most population geneticists believed that populations are genetically uniform, except for rare deleterious mutations.
A 58-year-ld man with chronic alcoholism presents with abdominal pain, fever, and hematemesis. Laboratory studies showed elevated serum levels of liver enzymes (AST, ALT) and decreased serum albumin (2.2 g/dL) the patient dies of bleeding esophage..
Clarify how the procedure of meiosis assures that the chromosome number of a species remains the same from generation to generation.
A female member of an animal species has a diploid chromosome number of 28, How many chromosomes in a spermatogonia?
Determine what kind of receptores are norepinephrine, epinephrine and phenylephrine? Are they slective or non-selective, alpha 1 or 2, beta 1 or 2.
Estimate the sequence of hexapeptide on the basis of the following data. When the sequence is not known, a comma separates the amino acids.
You are studying compound X and are trying to determine whether it is a competitive or a non-competitive inhibitor of an enzyme reaction catalyzed by the enzyme zyrase.
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