1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoray [572]
3 years ago
5

European rabbits were introduced to Australia in 1859. The rabbits reproduced rapidly in their new environment, displaced other

animals and overgrazed vegetation. In an attempt to reduce the rabbit population, a deadly virus was introduced in 1951. When the virus was first introduced, the rabbits died in large numbers, but the death rate decreased over time. What statement best explains the decrease in the rabbit death rate? A) The virus had a short life span and died out with the rabbits. B) Natural selection favored rabbits that were resistant to the virus. C) The rabbits died of natural causes and the introduced virus did not work. D) Young rabbits exhibited a learned behavior and began to avoid being infected by the virus.
Biology
1 answer:
Goryan [66]3 years ago
6 0

Answer:

B) Natural selection favored rabbits that were resistant to the virus

Explanation:

Most likely, virus resistance occurred over time, as a consequence of mutation. Individuals that carried the resistance mutation become favourable by natural selection.

Natural selection is evolutionary mechanism which favours traits of an organism that help him survive and reproduce (increase organism's fitness). In the example above, resistant rabbits that survived had the favorable trait (resistance) by natural selection.

You might be interested in
A wildfire burns a region of a healthy grasslands ecosystem. Which climax community will MOST LIKELY arrive in the burned region
Reptile [31]

Answer:

lichens and bryophytes[secondary seccession]

Explanation:

after the wildfire, the area would bee too dry and therfore it'll lead to a xerarch succession. lichens and bryophytes would be the climax communities.

7 0
3 years ago
Read 2 more answers
The word physical describes the layers of the Earth according to what material makes each layer. True or false?
Zanzabum

Answer:

It's <em>True </em>honey very true

3 0
2 years ago
Read 2 more answers
Fitness is determined by
Helen [10]

Answer:

Averaging the fitness of its members.

Explanation:

The fitness of a whole population can also be determined by averaging the fitness of its members. Absolute fitness is the ratio between the number of individuals with a genotype before selection versus after selection. Fitness is usually discussed in terms of genotypes, or collection of genes.

7 0
3 years ago
If we assume that, in the African savanna, rainfall and the amount of grass is plentiful, what other factor would BEST explain a
yan [13]
One other factor can be a rise in predators
7 0
3 years ago
Read 2 more answers
Pretend you are a biologist analyzing mutations occurring in the dna of an endangered species. in three to five sentences, descr
Snowcat [4.5K]

An adaptive mutation is a beneficial mutation that may confer an adaptive advantage to the species.

<h3>What is a mutation?</h3>

A mutation is any modification in the genetic material (DNA sequence) or genome in the cells of an organism.

Mutations can be beneficial, detrimental or neutral according to their position in the genome and the environment in which the organism lives.

In conclusion, an adaptive mutation is a beneficial mutation that may confer an adaptive advantage to the species.

Learn more about mutations here:

brainly.com/question/17031191

#SPJ1

6 0
2 years ago
Other questions:
  • For mitochondria to function properly they must have a constant supply of?
    15·2 answers
  • What part of a cactus does photosynthesis occur?
    15·1 answer
  • This substance makes up the majority of your cells, and is necessary for them to carry out most of their chemical reactions. Wha
    11·1 answer
  • In general it is expected that ________. select one:
    6·1 answer
  • Investigators examined the expression of transporter mrna and protein produced in zebrafish homozygous for each of the alleles a
    10·1 answer
  • A spinning turbine can only generate electricity in the form of a/an ____current
    8·1 answer
  • Which is an important function of normal flora?
    8·1 answer
  • Potatoes are an example of _____. <br> rhizomes<br> tubers<br> stolons<br> bulbs
    9·2 answers
  • A taxonomic category between kingdom and class is _____. group species phylum order
    9·2 answers
  • Where does The carbon , oxygen , and hydrogen to make glucose come from :
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!