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galben [10]
3 years ago
8

True or false:Meiosis takes place when it is time to replace old cell.Explain

Biology
1 answer:
Sveta_85 [38]3 years ago
7 0

Answer:

False

Explanation:

Mitosis is the process of replacing damaged and old cells.

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Suppose there are two homologous chromosomes. Each chromosome contains a single mutant allele in different parts of the chromoso
Harlamova29_29 [7]

Answer:

Cross overs can lead to formation of chromosome pairs that have no mutant allele.

Explanation:

Cross overs can lead to formation of chromosome pairs that have no mutant allele.

For example -

Suppose "X" is a mutant  allele and "x" is a mutant free allele.

Now when two homologous chromosomes contains a single mutant allele in different parts of the chromosome are crossed the following offspring are produced

X x

X XX Xx

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Thus, crossing over can create a single mutation-free chromosome

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2 years ago
All of the following topics are covered in the ACT science test except:
blagie [28]

I think the answer would be B. Genealogy.

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There are mountain ranges in the middle of the ocean floor. Because of the higher elevation gravity pushes down on the edges of
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There are mountain ranges in the middle of the ocean floor. Because of the higher elevation gravity pushes down on the edges of the plates. This is called ridge push.

<h3><u>Explanation:</u></h3>

Ridge push is a simple explanation of the height of the landforms based on the gravity and the elasticity of the underlying rock. It says when a landform gets too much higher, the weight of the overlying rock and soil pushes the landform back to plains. Thereby an equilibrium is maintained.  

Slab pull is a theory proposed which visualizes the earth interior as a pool of hot molten lava that has a convection current going on. It explains why the crust of the earth continuously moves slowly and forms mountains and other rift valleys.  

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What is the main function of the nucleolus?a. It produces enzymes that are then exported to the lysosomes. b. It produces cell a
STatiana [176]

Answer:

C..

Explanation:

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5 short multiple-choice questions that I have been stuck on for half an hour now!! PLEASE HELP ME!!!!! :(
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