A population of bacteria is exposed to a new antibiotic. After several days, most of the bacteria die, but a few survive and continue to reproduce. Eventually, the entire population becomes resistant to the antibiotic. What is the most accurate explanation for this outcome?

In a population of imaginary creatures called flufflins, the gene for fur texture has two alleles: F (smooth) and f (spiky). The three genotypes and their frequencies in the population are: FF = 0.25 Ff = 0.50 ff = 0.25 What is the frequency of the F allele in this population?

L14: You labeled the light gray and dark gray strands based on synthesis direction. The light gray strand is being synthesized toward the left side of the bubble, complementary to the red (top) strand. Which of the following correctly indicates the direction of synthesis for this light gray strand?  

L5: One form of red/green color blindness is inherited as an X-linked recessive trait. Assume a homozygous-normal woman has children with a colorblind man. Are there any of the offspring from this cross colorblind?

Part A. What is the frequency of the recessive allele that causes the condition? (type only numbers, no letters, for example 1.3)

Tarsanemia is a (made up) rare, autosomal recessive human disease caused by a mutation in the tar1 gene. In the general population, about 1 in 40,000 individuals is affected by Tarsanemia. What would be the expected frequency of individuals affected by the disease if siblings mate?

L9: An individual is heterozygous for genes A and B and has the following genotype: Which gametes are expected to be produced from that individual (assume genes A and B are unlinked)? A, a, B and b AA, AB, BB and bb AA, Aa, aa, BB, Bb and bb AB, Ab, ab and aB

L12: Which statement is true regarding negative supercoiled DNA?

L8: If the trait tracked in the following pedigree is inherited in an X-linked recessive manner, what is the expected genotype for II-3 and III-9?

L4: Tall plant height  (T) is dominant over short (t). You cross a tall and a short plant and obtain the following tall and short progeny. What is the most probable genotype of the parents?