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
Sidana [21]
3 years ago
14

Which of the following is not a requirement of natural selection?

Biology
1 answer:
yKpoI14uk [10]3 years ago
8 0

Answer: catastrophic events.

Explanation:

Several factors besides Natural Selection, such as gene flow, mutations, and genetic drift promote the evolution of populations, but only Natural Selection results in adaptations. Natural selection can explain the adaptation and specialization of living beings and depends on the existence of reproduction, heritable phenotypic variation, to some degree, and especially the difference of fitness among individuals. Reproductive differential and/or mortality favors certain genotypes over generations and may lead to loss or fixation of alleles over time within populations. Natural selection can act in different ways, depending on the variants phenotypic phenomena and the adaptive values associated with them, which may be disruptive, directional or stabilizing. Based in this, we can affim the catastrophic events are not required for natural selction to occur.

You might be interested in
Twind is considered to be an abiotic factor because it.?
stepladder [879]
Wind is considered an abiotic factor because it is not a living organism.

Hope this helps!
8 0
3 years ago
Why cant chloroplasts and mitochondria live outside the cell now?
worty [1.4K]
In my opinion, chloroplasts and mitochondria can't live outside the cell now because mitochondria ensure the energy for the cell and the chloroplasts is important for photosynthesis. Just my opinion.
4 0
3 years ago
Why are viruses like the avian flu important for vet scientists to study?
ValentinkaMS [17]

Answer:

Therefore, a global zoonotic disease surveillance system to reduce the emergence of zoonotic diseases in humans and to help detect other livestock diseases early could help to prevent the staggering economic losses associated with zoonotic disease outbreaks. So, yes I would say that they are very important to study.

Explanation:

5 0
3 years ago
Read 2 more answers
What organelle do you think this represents?<br> What is the analogy?
trapecia [35]
Cytoplasm,is it cell orangans? If so cytoplasm
4 0
3 years ago
Read 2 more answers
ancestors of giraffes with shorter necks could not reach branches high up in trees for food. this led to selection for longer-ne
hichkok12 [17]

With shorter necks, giraffe ancestors could not reach food-containing branches on tall trees. This resulted in the directional selection of giraffes with longer necks.

 

<h3>Why is choosing a direction necessary? </h3>

It nearly appears obvious that the giraffe's long neck developed as a result of a lack of food in the lower branches of trees. The giraffe has a significant advantage because it is taller than any other mammal and can feed where few others can. 

When compared to modern giraffes, the giraffe's ancient predecessors had a shorter neck. The plants that were lying at a higher level were inaccessible to them. Giraffe phenotypes have changed in various ways, and now have long necks to reach vegetation that is higher up. The extreme form is chosen above other features in directional selection. It was decided to choose the long-necked giraffe over the short-necked.

 

To know more about direction selection for longer necked giraffes visit:

brainly.com/question/3738222

#SPJ4

7 0
2 years ago
Other questions:
  • What part of the body reproduces, grows, repairs itself, uses oxygen and nutrients, digests food, eliminates waste, produces hea
    12·1 answer
  • 8) Amylase becomes denatured at a temperature of 80°C. During an experiment to study the effect of varying temperature on enzyme
    11·1 answer
  • What is nitrogen fixation
    15·1 answer
  • PLEASE HELP ITS BIOLOGY
    15·2 answers
  • Please help will mark brainly!
    9·2 answers
  • Find the difference between testosterone and the steroid molecule. <br><br> Brainliest!
    14·1 answer
  • In meosis, _______ over occurs which gives genetic variation.
    12·1 answer
  • A cell’s rate of exchanging materials with the environment positively relates to its surface area-to-volume (SA/V) ratio. Cell s
    9·2 answers
  • A feature of an organism <br> 1.gene<br> 2.mutations<br> 3.cell<br> 4.chromosome<br> 5.Trait
    6·2 answers
  • Please HELP!!!!!!!!!!!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!