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
Alona [7]
3 years ago
13

Describe natural selection- when does natural selection occur?

Biology
1 answer:
sashaice [31]3 years ago
7 0

Answer:

The process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin, and it is now regarded as be the main process that brings about evolution.

Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

You might be interested in
In STR profiling, PCR is used to obtain enough DNA to then detect the number of STRs at I specific loci.​
Licemer1 [7]

PCR technique is important in STR profiling in order to amplify and detect the number of Stars at a specific gene loci.

<h3>What is Short Tandem Repeat (STR) profiling?</h3>

Short Tandem Repeat profiling is a technique in molecular biology used to compare allele repeats known as STRs at specific loci in DNA between two or more samples.

The PCR (polymerase chain reaction) technique used in STR profiling involves making multiple copies is a particular segment of DNA in order to make enough quantities detectable in the analysis.

Therefore, PCR technique is important in STR profiling to detect the number of Stars at a specific gene loci.

Learn more about PCR at: brainly.com/question/13252565

4 0
2 years ago
A human offspring is a male if he inherits
scoundrel [369]
One Y and one X chromosome.
5 0
3 years ago
Mutations in DNA include deletions and insertions. These types of mutations:
pantera1 [17]

Answer:

(A). Result in different amino acids to be read due to frame shifts

Explanation:

Insertion or deletion mutations (or Indel mutations) can be defined as mutations in DNA due to insertion (addition) or deletion of nucleotide bases in DNA.  

These mutations lead to change in reading frames (sequence of codons), which leads to formation of protein having completely different amino acid sequence. Hence, these mutations are also cause frameshift mutations.

This is due due to triplet nature of genetic codes as insertion or deletion of one or more bases (but not three) would change change in codon sequence and mutated sequence can form a non-functional or truncated protein.

Thus, the correct answer is option (A).

6 0
3 years ago
What is one type of white blood cell that participates in the specific immune response called?
Firlakuza [10]

C is the most likely answer to this question.

6 0
3 years ago
Read 2 more answers
Explain how technology has changed to improve the diagnosis of a person's health condition?
GenaCL600 [577]

Advancement in technology over the years has definitely helped in improving the diagnosis of a person’s health condition.

<u>Explanation:</u>

Internal injuries can be easily diagnosed using methods like x-Ray and scanning. Technological advancements have helped immensely in the field of oncology. Detection of tumors has become easy with the arrival of computerized tomography and MRI scanning.

CT scans give a better image of internal organs than X-Rays and detection of conditions like heart disease, cancer, emphysema, liver disease etc has become easier. Magnetic Resonance Imaging also gives a clear picture of the internal organs.

3 0
3 years ago
Other questions:
  • What role does DNA play in the expression of traits
    11·1 answer
  • Orcas, or killer whales, are natural predators of sea otters. It has been observed that in regions where the sea otters are not
    7·1 answer
  • What type of bird has a specialized beak for eating meat?
    13·1 answer
  • Which is an example of a scientific hypothesis?
    10·2 answers
  • What process takes place in these nodules?
    11·1 answer
  • The nurse is irrigating a client's colostomy when the client begins to report cramping. what is the appropriate action by the nu
    7·1 answer
  • Which contains the least diversity of species A)class,B)order,C)family,D)phylum
    14·2 answers
  • Does someone know the answer for this question I do not know it.
    12·2 answers
  • Help I’m being timed
    12·1 answer
  • WILL MARK BRAINLIEST!!!! AND 50 PTS.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!