What are the causes of inherited genetic variation?? NEED NOW!!!!!!!!!!!!!!!

Biology

2 answers:

tensa zangetsu [6.8K]3 years ago

8 0

Answer:

What causes genetic variation?

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).

Explanation:

PLZ mark brainliest also I hope this helps

Alchen [17]3 years ago

3 0

Answer:

Explanation:

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An ecosystem can be characterized as

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All of the biological interactions plus interactions with the abiotic environment in a given area

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2.) Unlike photosynthesis, cellular respiration occurs in

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Write the procedure to observe human cheek cell

scoundrel [369]

Answer:

To observe the cheek cell,

Take a tooth pick use its blunt side to scrap inside the mouth.

You will see some deposition on the blunt side of tooth pick, make a smear on the clean slide in the center using that tooth pick.
Add a drop of methylene blue solution and place a coverslip, make sure that bubbles are avoided i.e. coverslip should be placed in the inclined manner.
Remove the excess solution and observe it under the microscope first under 4X and then under 10X.

Observation:

The cells observed are squamous epithelial cells. The small blue dots seen inside will be the bacteria from our teeth and mouth.

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3 years ago

In addition to E. coli, a risk factor for development of pyelonephritis is: a. urinary retention and reflux. b. nephrotic syndro

monitta

Answer:

One of the factors for the development of pyelonephritis, in addition to E. coli, is urinary retention and reflux (option a).

Explanation:

Pyelonephritis is an infection of the upper urinary tract caused by bacteria in the urine, such as Escherichia coli.

Under normal conditions, urine in the urinary bladder is aseptic, that is, without bacteria. The presence of bacteria in the urine indicates a urinary infection.

Urinary retention is the limitation of the expulsion of urine from the bladder. This promotes:

An increase in the amount of bacteria present in the bladder.
The pressure generated by urine retention causes the bladder to generate a retrograde flow - reflow - towards the ureters, leading the bacteria to the kidneys.

The result of urinary retention and reflux - when bacteria are present - is an infection in the upper urinary tract, called pyelonephritis.

Learn more:

Urinary tract infection brainly.com/question/4756206

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3 years ago