A urine sample with more than 100,000 organisms is considered indicative of infection. A urine sample containing 5,000 bacteria, with a generation time of 30 minutes, sits for 3 hours before finally being assayed. How many bacteria will then be present within the sample?

#Question id: 3403

#Unit 11. Evolution and Behavior

Balancing selection is a type of natural selection that balances two or more alleles in population allows maintaining genetic diversity. Which of the following allowed to this type of selection?

A- Heterozygote has the highest level of Fitness than normal homozygote

B- If rare phenotypes are favored over common phenotypes

C- Introduction of new allele in to a population by mutation and allowed to higher fitness in individuals

D- One homozygote has a highest level of fitness than heterozygote and another homozygote

#Question id: 3402

#Unit 11. Evolution and Behavior

Which of the following population their genotype frequency is governed by allele frequency as per Hardy Weinberg genetic equilibrium?

#Question id: 3401

#Unit 11. Evolution and Behavior

Genotypes of leopard frogs from a population in central Kansas were determined for a locus that encodes the enzyme malate dehydrogenase. The following numbers of genotypes were observed: What would be the expected numbers of genotypes if the population were in Hardy-Weinberg equilibrium?

#Question id: 3400

#Unit 11. Evolution and Behavior

Which of the following influence effective population size?

a. Sex ratio

b. variation between individuals in reproductive success

c. Fluctuations in population size

d. Small breeding group

#Question id: 3399

#Unit 11. Evolution and Behavior

What is probability of neutral mutation to be lost from the population size 100 and Probability of being homozygote in given population size 10 respectively?

#Question id: 3398

#Unit 11. Evolution and Behavior

Genetic drift in a small population for multiple generations can significantly affect the composition of a population’s gene pool. Following some observation are given for reason of Genetic drift?

A) Small populations are threatened by a loss of genetic variability. This loss may be caused by inbreeding, genetic drift, and limited mating.

B) Sampling error can arise is through the founder effect, which is due to the limited matting within population

C) Genetic drift arises is through a genetic bottleneck, which develops when a population undergoes a drastic reduction in population size.

D) Variance in allele frequency due to genetic drift will be maximal when one allele is very rare and the population size is small.

Which of the above observation are true?