Lab: Mouse Genetics (One Trait) — Cumulative exam Answers

Which best describes the relationship between DNA, genes, and chromosomes?

Mitosis is divided into phases.Which phase of mitosis is shown in the diagram?

Which is the most efficient way to avoid DNA mutations from UV radiation?

Which term refers to a solution with a higher solute concentration outside the cell than inside the cell?

Unattached earlobes is a dominant trait, E. A parent who is homozygous for unattached earlobes is crossed with a parent who is homozygous for attached earlobes. Which describes the genotypes of their offspring?

Mutations within an organism can occur in body cells or reproductive cells. Which type of mutation is seen in a sperm cell but not in a skin cell?

Mitosis is important because it allows

Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive. Which Punnett square shows a cross in which the probability that offspring will be red-eyed males is 25 percent?

Which organisms are prokaryotes?

During which process is mRNA synthesized from a DNA template with the aid of RNA polymerase?

During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator?

Two animals that can be found at the Grand Canyon include the Abert’s and Kaibab squirrels. The Abert’s squirrel is found at the south rim of the canyon and in a few surrounding states. The Kaibab squirrel, however, can only be found at the canyon’s north rim, mainly on the Kaibab Plateau. The Kaibab squirrel is not found anywhere else in the world. Scientists believe that the squirrels are actually closely related and have developed separately as a result of geographic isolation. It is possible that the squirrels were separated by plateau erosion that separated the forests and isolated the Kaibab population. Some scientists are studying if the squirrels are now two separate species or if the Kaibab squirrel is simply a subspecies of the Abert’s squirrel. Separate species are unable to reproduce with each other. Which evidence would be used to support the claim that the squirrels are two separate species?

If a scientist wanted to follow Mendel’s experiment with a different kind of plant, which type of plant would she examine?

Which characteristic best distinguishes quantitative data from qualitative data?

Which statement describes the F1 generation of a Mendelian monohybrid cross between two true-breeding parents?

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. A parakeet that is heterozygous for blue feathers (dominant) is crossed with a parakeet that is homozygous for white feathers (recessive). According to the Punnett square for this cross, what percentage of offspring is predicted to have blue feathers?

The diagram below shows the energy conversions of the Krebs cycle, which is part of cellular respiration. The U-shaped arrows that show changes for NAD+, FAD, and ADP molecules represent energy conversions. From each glucose molecule, two acetyl-CoA molecules are made for the Krebs cycle.How many energy conversions occur when both acetyl-CoA molecules go through the Krebs cycle?

Pea plants can have yellow seeds or green seeds. Which conclusion about the meaning of Y is correct if the allele combination Yy is for yellow seeds?

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?