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LekaFEV [45]
4 years ago
7

Billy and Johnny are brothers, but they do not look alike. Which one of the following pairs of factors contributed to this genet

ic variation?
A- Non-disjunction and mitosis.
B- Cytokinesis and cloning.
C- Crossing over and independent assortment.
D- Asexual reproduction and binary fission.
Biology
2 answers:
Kitty [74]4 years ago
7 0

Answer:C

Explanation:

jekas [21]4 years ago
4 0

Answer:

C- Crossing Over

Explanation:

Crossing over is essentially the gene shuffling and swapping around of genetic information.

A- is false because mitosis describes the building of nonsexual cells. So in terms of genetics, meiosis is the one you're looking for in this scenario.

B- Brothers are not clones.

D- Your parents had to have sex to produce a child. This is not Asexual.

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Please help!
Allisa [31]

Answer: Chill out, The answer is C

Explanation:

Protiens and Carbs are both needed for the DNA to work properly.

3 0
2 years ago
Explain how these geological processes and interactions have changed Earth's surface through the years. Be sure to use evidence
diamong [38]

Answer:

......_________2__

Explanation:

_2__2&&38638383

3 0
3 years ago
A 25-year-old man who had just recovered from Infectious mononucleosis had evidence of a genital lesion. His RPR test was positi
Varvara68 [4.7K]

If your test is positive, you might have syphilis.The following step is to confirm the diagnosis using a more accurate syphilis test, like FTA-ABS. The FTA-ABS test will aid in differentiating syphilis from other infections or diseases.

<h3>What is RPR test?</h3>
  • Rapid Plasma Reagin, or RPR, is a syphilis screening test.
  • It evaluates the presence of molecules (proteins) known as antibodies in the blood of individuals who may have the disease.
  • It is frequently used to test pregnant women for the condition and is used to check people who exhibit signs of STDs.
  • The effectiveness of syphilis therapy is also evaluated using the test.
  • Antibody levels for syphilis should decrease following antibiotic therapy.
  • Another RPR test can be used to keep track of these values.
  • Levels that stay the same or increase may indicate an ongoing infection.
<h3>Infectious mononucleosis:</h3>
  • The Epstein-Barr virus is the common infectious agent that causes infectious mononucleosis (EBV).
  • The term "glandular fever" is used more frequently.
  • Young adults between the ages of 15 and 25 are most commonly affected with infectious mononucleosis.
  • It affects all races and is equally prevalent in both sexes.
  • By the time they are adults, up to approximately 95 percent of persons have EBV infection.
  • There is no seasonal preference in the disease's occurrence worldwide.

Learn more about RPR test here:

brainly.com/app/ask?q=RPR+test%2BVERIFIED+ANSWERS

#SPJ4

3 0
2 years ago
Which of the following is an example of a density-independent limiting factor?
kakasveta [241]

Answer:

c. a natural disaster

Explanation:

A limiting factor in an ecosystem can either be density dependent or density independent. A density independent limiting factor is that which does not rely on the density of a population to affect it's size.

A density independent factor affects the population size irrespective of how densely populated the population is. Examples of density independent limiting factors that can affect a population are natural disasters like fire outbreak, hurricane, earthquake etc.

4 0
3 years ago
What is RH blood group ?​
Hunter-Best [27]

Answer:

hope you like it

Explanation:

Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells. If your blood has the protein, you're Rh positive. If your blood lacks the protein, you're Rh negative. Rh positive is the most common blood type.

7 0
3 years ago
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