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Drosophila melanogaster females heterozygous for three linked autosomal genes (a,b, and c) are testcrossed with triple homozygous recessive males. The map distances are a-b 10 map units, b-c 20 map units, a-c 30 map unit, and the genes are in coupling, that is: all the recessive genes are on the same chromosome. Answer the following questions:
a. What percentage of the testcross progeny are genotype ab/ab?
b. What percentage of the testcross progeny are genotype Ac/ac?
c. What percentage of the testcross progeny are genotype bC/bc?
Two pea plants heterzozygous fro purple flowers. They produce 100 seeds. If you pick one and let it grown what is the chance it would be white. What is the chance it would be purple?
In Ground hogs the allele E for the ability to see shadows is dominant to the allele e for the inability to see shadows. The dominant allele H causes groundhogs to hide from shadows that they see.
When did dinosaurs and pterosaurs become extinct? Which are the only extant animals that descended directly from dinosaurs.
What biochemical steps may be responsible for gas is produced during fermentation of sugars by Enterobacteriacae?
What approach would use to isolate only cells. For each of the SLP assignments, you will be provided with a hypothetical experimental scenario or data. These assignments are more opened-ended than the case assignments.
how a mutation in a DNA exon will change the eventual mRNA sequence, and how this may or may not change the amino acid sequence.
Not much more than 100 years ago, ordinary citizens were unaware of the role of microorganisms in the cause and spread of disease. In her book, "The Gospel of Germs",
Non-peptide transmitters still contain a specific mRNA sequence that can be recognized by in situ hybridization assays. Under such a situations, it is assumed that the non-peptide transmitter has been translated.
Which of these situations would be most positive to the re-establishment of resident zoochlorellae, assume compatible Chlorella are present in P. bursaria's habitat.
You are studying a single-gene locus with two alleles in a population that is in Hardy-Weinberg equlibrium. Examination of a large sample of individuals from the population reveals there are five times as many heterozygotes as there are homozygote..
In a population you count 30 red plants, 50 pink plants, and 20 white plants. What are the allele frequencies of the CR and CW alleles in this population.
What are primer-labeled dyes and terminator-labeled dyes? What is the advantage of one over the other and which is in use today?
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