Which of the following best predicts why humans and mice have identical telomeric repeat sequences?

Unit 7 Progress Check: MCQ Part B

Which of the following sets of data provides evidence that best supports common ancestry for organisms in all three domains?

Organisms in Bacteria, Archaea, and Eukarya each have adenine, thymine, guanine, and cytosine bases forming their DNA.

Which statement below best states an alternative hypothesis Fox could have used to frame his research?

In the presence of available energy and the absence of a significant quantity of atmospheric O2 simple proteins will form spontaneously from a mixture of amino acids.

Iridium is an element that is rare on Earth but commonly found in meteorites. A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. Which of these would be an appropriate null hypothesis to test

There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments.

Based on the data in Figure 1, which of the following would most affect the allelic frequencies of the populations on Isabela and Butuan?

Immigration of individuals from Metro Manila into the two populations

Which of the following best explains the trend shown in Figure 1? (Kentucky Derby)

By 1940, most genetic variation for speed had been lost from the gene pool.

There are two species of elephant seals: northern elephant seals, Mirounga angustirostris, found off the western coast of North America from Baja California to the Gulf of Alaska, and southern elephant seals, M. leonina, found in the southern oceans. Hunt

In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. A population of the species has the following allele f

The frequency of the B allele will increase because light-colored individuals will be more visible to predators.

A group of researchers noticed that using a particular drug to treat cancer in mice would reduce the size of the tumor, but some of the tumor cells appeared to be resistant to the drug since some of these cells would increase in number over time. The rese

Increasing the number of trials and the number of mice in each treatment group

A population geneticist is conducting an investigation on a population of mice. The geneticist determines the genotypes for a particular trait of all of the mice in the population during generation 1 and then removes all of the mice with the genotype aa.

Future generations will eventually completely lose the a allele from the gene pool. There will not be any new individuals with the aa genotype.

A scientist is studying the impact of mutagens on genetic variation in mice. In an experiment, the scientist creates two groups of twenty highly inbred mice. Because the mice are highly inbred, they are essentially identical to one another. One group is g

The group of mice fed the mutagen will show a greater ability to digest the food, because the higher genetic variation within the group makes it more likely that some individuals will have a combination of genes better adapted to the new food.

Which of the following best explains the divergence in morphology in the birds?

The original habitat had many available unoccupied ecological niches that were colonized by populations of the original species.

A group of researchers claim that chance events play an important role in the evolution of populations. To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. They found that although

Start each population with genetically identical bacterial cells from a single culture to make sure that the initial genetic variation in all of the populations was exactly the same.

Some scientists propose that due to human activity and climate change, a sixth mass extinction has already begun. Select the best alternate hypothesis to support this claim.

Observed modern extinction rates will resemble the rates found early in previous extinctions.

A scientist maintains a large population of the fruit fly Drosophila affinis in the laboratory. After 20 generations of allowing this population of about 1000 flies to mate randomly, 10 females and 10 males were isolated from the rest of the population. B

The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population.

Human activities can drive changes in ecosystems that affect the risk of extinction. An experiment is designed to help prevent the further decline and extinction of the Henslow's sparrow in which controlled burns will be set in the each of the ten Midwest

Controlled fires in counties 4 and 5 will lead to an increase in the sparrow population.

Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein?

Bacteria and eukaryotes use different mRNA codons for the same amino acids during translation.

Which of the following best predicts why humans and mice have identical telomeric repeat sequences?

Humans and mice share a recent common ancestor that had the 5?-TTAGGG-3?? repeat sequence in its telomeres.

Which of the following would most likely represent the types of individuals found in one of the species resulting from shape becoming a prezygotic isolating mechanism in the initial population represented in Figure 1 ?

White Circle Gray Circle Black Circle

Which of the following best predicts the effect of the enclosure on the O'Neill population?

Which of the following best predicts how phylogenetic relationships might be revised if transposon 1 was not found in chimpanzees?

Which of the following could best account for the change in genotypic frequencies over the ten generations?

Which of the following best describes what occurred during the periods indicated by the arrows?