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
Mama L [17]
2 years ago
5

Please help me :(

Biology
1 answer:
Kobotan [32]2 years ago
3 0

Answer:

1. a.mutation,

b. recombination,

c. immigration of genes,

d.climate and

e.associations

2. Mutation : Is the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.

  • Gene flow : Gene flow is also called gene migration. Gene flow is the transfer of genetic material from one population to another. Gene flow can take place between two populations of the same species through migration, and is mediated by reproduction and vertical gene transfer from parent to offspring.

  • Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

  • Genetic Recombination : Is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles. This recombination process creates genetic diversity at the level of genes that reflects differences in the DNA sequences of different organisms.

3. The 3 Types of Natural Selection

  • Stabilizing Selection.
  • Directional Selection.
  • Disruptive Selection.

  • Stabilizing selection : Stabilizing selection is a type of natural selection in which the population mean stabilizes on a particular non-extreme trait value. This is thought to be the most common mechanism of action for natural selection because most traits do not appear to change drastically over time.

  • Directional Selection: In population genetics, directional selection, is a mode of negative natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.

  • Disruptive selection : Disruptive selection, also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values. In this case, the variance of the trait increases and the population is divided into two distinct groups.

You might be interested in
Mendel knew that the variations in the offspring
larisa [96]

Answer:

controlled the fertilization process.

Explanation:

Mendel took precautions to avoid contamination by pollen through self pollination of the P generation. He controlled the fertilization processes between the plants. He self pollinated the first pureline varieties to form the P generation. He then cross pollinated them to get F1 generation. Every step of his experiment was controlled.

7 0
3 years ago
Where will chlorophyll be found in the chloroplast?
salantis [7]
C. in the thylakoid membrane
have fun in bio :)
7 0
3 years ago
How does light, temperature and soil composition affect animal life in an ecosystem
tekilochka [14]
Light lets plants grow for the animals eat them
temperature lets the animals know when they have to hibernate or come out and hunt
i think soil composition helps the animals to  get new types of food or lets them get water ?
5 0
3 years ago
What is the message behind this<br> political cartoon?
zysi [14]
<h2>Answer:</h2><h2>Haha!</h2><h2>I don't know sorry (◔‿◔)</h2>

7 0
3 years ago
Asexual reproduction in one celled organisms never involes
maw [93]
I’m not sure i understand.
5 0
3 years ago
Other questions:
  • 1-what are three ways organisms deal with limited resources
    11·2 answers
  • Explain why it is important to evaluate the information presented on websites critically.
    7·2 answers
  • Oxidative damage to DNA can often result in the alteration of a single nucleotide.
    6·2 answers
  • Having trouble with this..??
    5·2 answers
  • Which transport process requires the use of a cells energy
    12·2 answers
  • How does location best represents the relationship between structure and function?
    10·1 answer
  • Birth-control pills prevent pregnancy by interfering with the usual feedback cycle between the ovaries and the pituitary.
    13·1 answer
  • Write five facts on motion and Newton's First Law.
    12·1 answer
  • What is the atomic number of this atom?<br> a<br> b,c<br> O 8<br> 13<br> 09<br> . 5<br> 4.
    6·1 answer
  • 1.) In your own words, describe the difference between DNA and GENES
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!