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
Valentin [98]
2 years ago
11

PLEASE HELP FAST!!!!! How does sexual reproduction introduces genetic variation into offspring?

Biology
1 answer:
hichkok12 [17]2 years ago
6 0
During meiosis the parent cells are eventually split into four cells that aren't identical at all. During meiosis 1 crossing over occurs which causes the chromosomes to basically get all mixed up
You might be interested in
If a patient complained of a "stomach ache" and pointed to the umbilical region as the site of discomfort, which organs located
SashulF [63]

Answer:

small intestine

Explanation:

3 0
3 years ago
A mutation in yeast makes it unable to convert pyruvate to ethanol. how will this mutation affect these yeast cells?
vlada-n [284]
<span>The answer to the question "A mutation in yeast makes it unable to convert pyruvate to ethanol. how will this mutation affect these yeast cells" is "a" the mutant yeast will be unable to grow anaerobically.</span>
7 0
2 years ago
In mendel’s peas, plants homozygous for the recessive allele d are dwarfs. the dominant allele d determines the normal tall phen
Zolol [24]
So, recessive allele 'd' are dwarfs. 
The dominant allele is 'D' determines tall. 
All you have to do is try to cross the alleles together to get either a homozygous or heterozygous remain. So, you should be able to get Dd or DD. 
3 0
3 years ago
If a SARS-CoV2 virus were to mutate and become and become better at attaching to respiratory cells, how would natural selection
navik [9.2K]

Answer:

Mutations leading to the better attachement of virus to the host cell would allow the virus to spread the infection and leave more progeny. The reproductive fitness of mutant viruses would allow the mutation to spread.

Explanation:

1. The organisms with same resource requirement compete with each other. Viruses are not living things but once inside the host cell, they behave like living things. Rapid multiplication of virus overpopulate the host cells.

2. Genetic variations are added to the viral progeny by random errors during replication of the viral genome. These random variations may  impart beneficial trait, harmful feature or remain neutral. If a random mutation in the SARS-CoV2 virus allows it to adhere better to the cells of the respiratory system, the virus would be better able to infect these cells to spread the infection. Once inside the host cells, the mutant virus would leave more progeny. On the other hand, the wild type virus that lack this mutation would  have lesser chances of entering the host cells and may or may not replicate.

3. The progeny of the mutant virus would compete better with the non mutant ones due to the presence of same mutation.

4. Differential reproduction and more progeny of the mutant virus would spread the mutation among the virus.

4 0
2 years ago
Which part of your nervous system is similar to the autopilot of the airplane?
soldier1979 [14.2K]
The part of the nervous system that is similar to the autopilot is the AUTONOMIC NERVOUS SYSTEM. It controls the muscles and the glands of the internal organs. It is divided into sympathetic and parasympathetic. The sympathetic autonomic nervous system brings about excitation in the body while the parasympathetic brings about calmness.
8 0
2 years ago
Other questions:
  • What advantage do seeds give a plant
    6·2 answers
  • If humans are increasingly exposed to these pollutants what are some possible results
    7·1 answer
  • What is a biofilm and what role does biofilm play in disease?
    10·1 answer
  • The process of synthesizing RNA to DNA is known as
    6·1 answer
  • Select the term that describes the constant mutation of the influenza virus glycoproteins over time:_________.
    10·2 answers
  • Isotherms cannot cross because to cross would indicate two different for the same location.
    12·2 answers
  • Which macromolecules were present in each of the samples?
    11·1 answer
  • Which of the following are compounds? (Choose all that apply.)
    6·1 answer
  • Cells were treated with a chemical that inhibits the first step of the electron transport chain. How would this affect the level
    6·1 answer
  • 1.11) Answer True or False.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!