answer.
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
nasty-shy [4]
2 years ago
15

The evolution of populations due to chance is

Biology
1 answer:
Nataly [62]2 years ago
4 0

Answer:

D). genetic drift

Explanation:

Genetic drift is the change in an allele frequency over a period of time. This event has to be random and a chance event.

For example: In a population of a flowering plant there are two types of flowers, blue and yellow. Due to a fire many yellow flowers are destroyed by chance. Now the resultant population will have more blue flowers and when they reproduce the population will eventually evolve to have more blue flowers. Effect of genetic variation is more pronounced in a small population since its easy to disturb the allele frequency.

You might be interested in
You have made random-sequence synthetic RNA molecules that contains only A and G, and which contain 5 times as much A as G. You
Blababa [14]

Answer:

According to the genetic code, the amino acids are the following:  

- Glycine: encoded by GGC, GGA and GGG codons  

-Arginine: encoded by AGA and AGG codons

-Lysine: encoded by AAA and AAG codons

-Glutamic acid: encoded by GAA and GAG  codons

Explanation:

The probabilities to observe an amino-acid formed by Glutamic acid in the coding sequence is 2/9 for each codon

7 0
2 years ago
The biodiversity of cultivated crops is currently under threat from industrial
DENIUS [597]

Answer:

The wastes or run off of the industrial farming enters the water and nearby cultivated crops, this waste consist of chemicals and pesticides mostly, that are the cause of destruction of not only the cultivated crops but also the useful soil-borne rhizoshpere bacteria too. On the other hand climate change impacting from emission of greenhouse gases, increase air pollution and also cause deforestation. Such circumstances could all lead to the extinction of important crops.

In order to avoid these problems, proper waste management systems should be developed to dispose the waste of industries and others at area that is far from the population or cultivation. The climate change resulting from the pollution could be avoided by the use of filtered products for the smokes, so that filter could absorb harmful substances and the smoke released in air would not be that much toxic. Moreover, there is the need to identify and grow such crops that can adapt these environmental changes.

3 0
2 years ago
Read 2 more answers
Which of the following would be a result of eutrophication of a lake? undergrowth of water plants hypoxia, or low levels of oxyg
Travka [436]

Answer:

Undergrowth of water plants hypoxia

Low levels of oxygen.

Explanation:

Eutrophication occur when lake or river has adequate nutrients that will encourage the growth of water plants i.e algae which lead to the depletion of dissolved oxygen in the lake. The growth of algae is increased due to availability of carbondioxide or phosphorus or nutrients required for photosynthesis. This result in tainted drinking water,hypoxia and degradation of recreational activities.

9 0
2 years ago
Read 2 more answers
The world's high rate of coal consumption is causing many negative impacts on the environment. Solving this problem involves a c
irakobra [83]

Answer:

Answer: b. developing more efficient methods of mining coal  

Coal is a combustible black or brownish black sedimentary rock. Coal is produced by the dead plant matter. It is a fossil fuels that is used for generating electricity in the thermal power plants, used as cooking fuel, and fuel in automobiles. The burning of the coal results in the liberation of carbon dioxide, sulfur dioxide and carbon monoxide gases in the environment. These gases are responsible for causing the air pollution.

b. developing more efficient methods of mining coal is not a conservation tactic related to coal consumption because the more the efficient mining will promote the excavation of the coal which will further contribute to its extensive consumption and air pollution.

Click to let others know, how helpful is it

Read more on Brainly.com - brainly.com/question/2036080#readmore

Explanation:

<u><em>plzz give brainliest</em></u>

6 0
2 years ago
Read 2 more answers
A yellow female Labrador retriever was mated with a brown male. Half of the puppies were brown, and half were yellow. Explain ho
Over [174]

Answer:

The first male was bb Ee, and the second male was bb EE.

Explanation:

In Labradors coat colour is controlled by two genes. Suppose the two genes are B and E. B produces black colour and recessive form bb gives brown colour. Gene E is epistatic over gene B in its recessive form which means that ee will produce yellow colour regardless of the genotype present of B gene.

The first case is possible if the female lab is bbee (yellow) and the male lab is bbEe (brown):

bbee X bbEe

        bE      be

be  bbEe    bbee

So half of the offspring will be brown (bbEe) and half of them will be yellow (bbee)

The second case is possible if the same female bbee mates with a brown male of different genotype which can be bbEE:

bbee X bbEE

         bE

be   bbEe

So all offspring will be brown (bbEe)

Hence, the first male was bbEe and the second male was bbEE.

6 0
2 years ago
Other questions:
  • Lipase, maltase, and protease are members of a group of catalysts known as
    15·1 answer
  • The action of helicase creates _____. the action of helicase creates _____. primers and replication bubbles replication forks an
    5·1 answer
  • A _____ remains when the nitrogen-containing portion of an amino acid is removed. select one:
    5·1 answer
  • A ________ is any environmental agent—biological, chemical, or physical—that causes damage. a contaminant b mutagen c teratogen
    10·2 answers
  • What would a biochemist call the result of chaining many molecules together
    6·1 answer
  • Carotenoids are often found in foods that are considered to have antioxidant properties in human nutrition. What related functio
    7·1 answer
  • Mosquitoes can often transmit viruses from one organism to another, acting as _______ of the virus. 
    15·2 answers
  • Describe how C. parvum obtains the glucose it needs for glycolysis after it has infected another cell. Explain the role of lacta
    11·1 answer
  • A grassy meadow high in the Sierra Nevada Mountains of eastern California is known to support a variety of organisms. During the
    7·1 answer
  • choose one! What action destroys topsoil 1)mowing land 2)adding nutrients to soil 3)plowing land without replantation 4)sowing s
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!