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
Ber [7]
4 years ago
6

Can natural selection cause new variation?

Biology
1 answer:
DENIUS [597]4 years ago
4 0
Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by: mutation. random mating between organisms.
You might be interested in
Describe five ways in which you can tell a living thing from a non-living thing
tia_tia [17]
1: it has a heartbeat
2: it gives off a heat signature
3: it breaths
4: it will use resources
5: it will give off some form of waste  
8 0
4 years ago
Read 2 more answers
1. The fossil shown in this photo is of a Basilosaurus. Its skeletal features suggest that it spent its entire life swimming in
Oduvanchick [21]
Do you have a picture of the bones so I can help you ?
3 0
3 years ago
Over 1,800 mutations have been described within the CFTR gene. These mutations can be readily detected using PCR and DNA sequenc
sertanlavr [38]

Answer:

The correct answer is - option C.

Explanation:

CFTR is a short form of cystic fibrosis transmembrane conductance regulator protein which is caused by a recessive mutation in this protein. This mutation results in the accumulation of mucus in secretory organs.

As the disease is a recessive disease, for the mutant phenotype to expressed both copies of the allele required to be recessive.

The mother is negative for the CFTR. Hence, she will not transfer the mutant allele to her child So, the child would have a wild-type phenotype even if the father having two copies of recessive allele.

Thus, the correct answer is - option C.

8 0
4 years ago
The diagram shows two charged objects, A and B.
dybincka [34]

Answer: The charges of the objects are A: Positive and B: Negative.

Explanation-

The electric field lines are pictorial representation of the electric field in terms of imaginary lines.

The direction of electric field is away from the positive charge and is directed towards the negative charge.

In this question, the electric field lines are emerging from A and coming towards B.

Thus, the right answer is A: Positive and B: Negative.

4 0
4 years ago
Read 2 more answers
Can someone help me with this plz have no clue what to do please and thank you
11Alexandr11 [23.1K]
Why do cells have a plasma membrane
5 0
3 years ago
Other questions:
  • What do you think is the most likely cause of sue's illness? provide evidence to support your theory?
    14·1 answer
  • Which phase or cell division is shown?
    8·2 answers
  • How do plants engage in transpiration?
    7·2 answers
  • Point at which the optic nerve leaves the eye, creating inability to see due to no receptor cells are located there
    12·1 answer
  • Changes in the nucleotide sequence in dna are called
    15·1 answer
  • What was Charles Darwin’s contribution to the theory of evolution?
    7·2 answers
  • When human red blood cells are placed in pure water, the cells immediately burst. which process explains what happens to the red
    15·1 answer
  • What product contains alot of processed simple sugars? 1. fruit 2. cookie 3.potato 4. pasta
    10·2 answers
  • Which type of fertilization occurs in humans? Explain your answer.
    13·2 answers
  • Describe a real world situation that can be represented using a table and graph?<br> PLS HELP
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!