Homology is evidence of | Biology homework help

Question1 of 20
Homology is evidence of ______.
A. directional selection
B. convergent evolution
C. genetic drift
D. common ancestry
2 of 20
Which one of the following statements is true?
A. Natural selection works on non-heritable traits.
B. Natural selection works on variation already present in a population.
C. Individuals evolve through natural selection.
D. Organisms evolve structures that they need.
3 of 20
Natural selection results in ______.
A. increased genetic variation
B. offspring better adapted to a future environment
C. a decrease in the size of a population
D. offspring adapted to their current environment
4 of 20
Who believed in species change by passing acquired characteristics on to offspring?
A. Wallace
B. Mendel
C. Lamarck
D. Darwin
5 of 20
Which one of the following will prevent significant genetic drift?
A. Gene flow is absent.
B. The population size is large.
C. There is genetic variation.
D. Variation in a particular trait is heritable.
6 of 20
Which of these types of Galapagos species most influenced Darwin to develop the theory of species change by natural selection?
A. Goats
B. Reptiles
C. Small birds
D. Cacti
7 of 20
All of the alleles of all of the genes within a population make up that population’s ______.
A. genotype
B. heterozygosity
C. gene pool
D. gene flow
8 of 20
A small population of deer is introduced to an island. All the males have 11-13 points on their antlers. After several generations, if all males have 12 point antlers, this is due to
A. disruptive selection.
B. stabilizing selection.
C. directional selection.
D. bottleneck effect.
9 of 20
Two nearby populations, in which there is some movement of individuals between the populations, are an example of
A. gene flow.
B. disruptive selection.
C. genetic drift.
D. bottleneck effect.
10 of 20
Evidence which supports the theory of evolution is found in studies of
A. embryos.
B. biochemistry.
C. fossils.
D. All of the above.
11 of 20
Which of the following is an example of sexual selection?
A. Peahens choose to mate with peacocks that have the most beautiful tails.
B. Bacteria evolve resistance to antibiotics.
C. Sexual recombination occurs during meiosis.
D. Cheetahs experienced a population bottleneck.
12 of 20
The publication date of Darwin’s The Origin of Species was
A. 1809.
B. 1830.
C. 1869.
D. 1859.
13 of 20
Imagine a population of tree frogs in South America whose habitat has been reduced to the point where only 25 frogs survive. This is an example of
A. founder effect.
B. bottleneck effect.
C. genetic drift.
D. All of the above.
14 of 20
Homologous structures, such as a bat wing and whale flipper
A. are similar externally but have different basic structures and were probably not derived from a common ancestor.
B. are the result of pairs of chromosomes that are identical in bats and whales.
C. have the same underlying structure due to inheritance from a common ancestor.
D. are structures that did not develop in response to natural selection.
15 of 20
Which of the following is an example of directional selection?
A. The birth weight at which newborn humans are most likely to survive and the average weight of newborn humans are about the same.
B. There is an increase in antibiotic-resistant strains of bacteria.
C. Garter snakes with different coloration patterns behave differently when threatened.
D. A catastrophe wipes out nearly 99% of a population.
16 of 20
A small population of deer is introduced to an island. All the males have 11-13 points on their antlers. After several generations, if most males have antlers with 20 points, this is the result of
A. the founder effect.
B. stabilizing selection.
C. disruptive selection.
D. directional selection.
17 of 20
Darwin and Lamarck both realized that most species produce many more offspring than is necessary to maintain a constant population. What is the fate of the excess individuals?
A. Evolution kills them off.
B. They evolve to take advantage of natural resources.
C. The more favorable forms survive and reproduce, while the others do not.
D. They mutate and then are able to adapt to new environments.
18 of 20
Genetic drift results in a change in gene frequencies because
A. the population size is so small that chance occurrences can alter gene frequencies.
B. reproduction is non-random within the population.
C. the population has not yet stabilized.
D. the population is so large that natural selection has little noticeable effect.
19 of 20
Which of the following males in a given population would be considered the most fit in an evolutionary sense? One that produced
A. 1,000 offspring, of which 100 survived but 99 did not reproduce.
B. two offspring, both of which survived and produced offspring of their own.
C. 10 offspring, of which 10 survived, but nine did not reproduce.
D. 100 offspring of which 10 survived but nine did not reproduce.
20 of 20
While on the Beagle, Darwin was influenced by a book by Charles Lyell that suggested that Earth was ______ and sculpted by geologic processes that ______ .
A. old; continue
B. old; no longer occur
C. young; continue
D. young; no longer occur

 

 







Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10