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

Which of the following could be a nucleotide of DNA?

Consider this statement taken from a student's lab report.Since the hypothesis was supported, I learned that butterflies are attracted to red flowers more than to yellow flowers. More research could be done to compare the relative attraction of different pairs of colors in order to figure out what the best colors are to attract butterflies.From which section of the lab report did the above statement most likely come?

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

Cranberries and grapes may have therapeutic value. A cranberry company obtained the patent for a process to extract the oil from cranberry seeds. According to the patent, this oil can be used to treat breast cancer or to reduce its incidence. The oil can be used in drinks and foods. A grape juice company claims to have evidence that certain grapes have health benefits ranging from improving cardiovascular health to improving cognitive brain function in the elderly. These claims will be tested by the Food and Drug Administration (FDA) before the companies are allowed to market their products for “treating” ailments or “improving” health. Until then, the companies can describe that their products “help to maintain” or “support” health. Until studies support their claims, the companies cannot ascribe direct health benefits to their products.Why would the FDA perform tests when a cranberry company and a grape company have already conducted research on the same products?

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

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

Which organisms are prokaryotes?

Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What immediate response would the blood cells have in this condition?

Red-green color blindness is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree. Which individuals in the pedigree are identified and labeled carriers for red-green color blindness?

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?

Some theories are developed from repeated testing of a single hypothesis. Cell theory, germ theory, and the theory of evolution all have developed from the testing of multiple related hypotheses. Which statement best explains why some theories develop this way?

What is the next step in the process after a substrate enters the active site of an enzyme?

Which characteristic best distinguishes quantitative data from qualitative data?

If the endoplasmic reticulum were removed from the cell, which organelle would not be able to function properly, and why?

Katie wants to make ball-and-stick models of the four macromolecules. She has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogenIn which macromolecule will she use the black, red, and purple balls in a ratio of 1:2:1?

Which is a scientific question?

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?

A drug researcher could avoid risking human health in tests of new drugs by

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?

Omar studies the effects of a drought on the depth of water in a pond. He takes a reading of the water depth at the same location in the pond every day for the duration of the drought. Which method of displaying data would he most likely use to show changes in water depth?