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1. A homozygous red-eyed female Drosophila mates with a red-eyed male Drosophila. What proportion of the female offspring will have white eyes?75%25%100%0%2.Red-green colorblindness is a recessive X-linked trait. If a female is red-green colorblind, which of the following is TRUE?Her father must be colorblind.Both her parents are carriers of the recessive allele.Both her parents must be colorblind.Her mother must be colorblind.Women cannot exhibit red-green colorblindness because they have two X chromosomes.3.Alleles arerecessive traits.dominant traits.exact copies of the same trait.alternate versions of the same trait4.Using three bases to represent each amino acid in a polypeptideensures that other organisms can read the code too.prevents the wrong amino acid from being incorporated into a protein.ensures that DNA can replicate properly.ensures that all amino acids are represented at least once by the code.5. If an organism's DNA contains 20% adenine nucleotides, what percentage of its DNA is composed of guanine nucleotides?15%10%30%40%6. A true-breeding tall pea plant is crossed with a tall pea plant of unknown parentage. Which of the following is correct?Some short individuals may appear in the F2 generation.Some of the F1 generation will be short.All of the offspring (F1) will be short.Over several generations, no short individuals will appear.7.Morgan breeds and sells snakes. He knows that he can make the most money by breeding and selling albino snakes. Albinism is a recessive trait. His female albino corn snake just produced 6 offspring. Two displayed normal coloration and 4 were albino. What do you know about the genotype of the father?He could be either heterozygous or homozygous dominant.He must be homozygous recessive.There is not enough information to determine the father's genotype.He must be heterozygous.8.During the elongation cycle of translation, the A site on a ribosome functions inreleasing the completed polypeptide.holding a polypeptide as amino acids are added.attaching the small subunits of rRNA to the large subunit.receiving a new tRNA with the correct amino acid.9.Which of the following is an incorrect match?translation - polypeptide formationtranscription - tRNA formationtranslation - mRNA binding to rRNAreplication - copying of DNA10. The three steps that are required for DNA replication arebase doubling, unwinding, and joining.unwinding, base doubling, and base pairing.unwinding, complementary base pairing, and joining.unwinding, transcription, and translation.11.The x-ray diffraction pattern of DNA discovered by Rosalind Franklin showed that DNAcontains alpha helices and beta sheets.contains beta sheets arranged in a repeated pattern.has a repeated pattern.is both helical and has a repeated pattern.12. Which of the following is TRUE?All traits on the sex chromosomes are associated with sexual development.Females can be heterozygous for sex-linked traits.Males are heterozygous for the SRY gene.Men pass their X-linked traits to their sons.13. Martha has a widow's peak and attached earlobes. Martha's dad had a straight hairline and unattached earlobes. What is Martha's genotype?WweeWwEEwweeWWEE
List all probable points at which caffeine may be exerting its effect. Caffeine is known to alter the transmembrane movement of calcium. What is (are) the possible site(s) at which caffeine is acting.
While two monohybrid round squashes are crossed, the offspring ratio is ¼ flat, ½ oblong, ¼ round. Squash shape is therefore controlled by incomplete dominance. What offspring ratio would you expect from a cross between a plant with oblong fruit and ..
Patients in renal failure may have to have dialysis in order to survive. Describe the different types of dialysis and why they help the patient's survival.
An autoimmune disease alters microglial cells in brain so that they see all of your oligodendrocytes as foreign, and therefore destroy them like they would any other material.
Action potentials are usually generated at axon hillock and propagated down axon away from the cell body. If you experimentally depolarized an axon to the threshold level at a point halfway down the axon, what would happen.
A flowering plant has ten chromosomes in each cell in its roots. Discuss how many chromosomes will be in each cell of the leaves of the plant.
What mode of nutrition these bacteria almost certainly use. Include in the discussion the RDA guidelines recommending less than 30 percent of total calories come from fat.
What phenotypic ratio would you get if you crossed a white mouse and a heterozygous brown mouse?
In maize, a dominant allele (A) is essential for seed color as opposed to colorless (a). Another gene has a recessive allele (w) which results in waxy starch, as opposed to normal starch (W).
Suppose that in rats, grey fur (T) is dominant to tan (t). If you mate a tan rat with a homozygous dominant rat, Determine what fraction of the offspring will be homozygous?
What are the three main ions that play a role in the equilibrium membrane potential. What ion drives the potential, and why. What kinds of functions might these shared genes have.
Whether ratios are leverage or profitability ratios. If a leverage ratio, is it coverage or capital structure? What is the dissimilarity between the two? If a profitability ratio, examine why it is not completely satisfactory for measuring an organiz..
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