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notsponge [240]
3 years ago
14

During an interphase lasting 23 hours the S stage takes average 8.0 hours.What is the percentage of interphase is taken up by S

stage?
Biology
1 answer:
Alik [6]3 years ago
8 0

The right answer is 34.78%

The interphase is the period of the cell cycle that the cell transcribes its genes and the chromosomes are duplicated. It can be subdivided into several phases:

* phase G1

* phase S: during which the chromosomal material is doubled by DNA replication. This is called chromosome duplication.

* phase G2.

Phase G1 is the longest phase of the interphase (its duration depends on the type of cell), followed by phase S, then phase G2.

To calculate the proportion of phase S in the interphase simply make the division:

phase duration S / interphase duration = 8/23 = 0.3478 (in percentage that is 34.78% (0.3478*100)).

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Hope this helps (:

3 0
3 years ago
Human blood groups are governed by three alleles, IA, IB, and i. IA and IB are codominant and i is recessive to both. A man who
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Answer:

They could have all four type phenotype that are A, B, AB, and O

Explanation:

If the man has A blood group and the woman has B blood group then the genotype of man can be IAIA or IAi and the genotype of woman can be IBIB or IBi.

               IA      i

       IB   IAIB   IBi

       i     IAi       ii

So if the genotype of the parents are IAi and IBi then out of four offspring one could have AB blood group, second could have B blood group, third could have A blood group and fourth could have O blood group as shown in the cross above.  

7 0
3 years ago
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Ugo [173]
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7 0
3 years ago
Read 2 more answers
Environmental factors that can influence gene expression can be internal or external.
muminat

Answer:

True!

Explanation:

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6 0
2 years ago
Which of the following correctly pairs biotic factors with an effect on the biosphere?
uysha [10]

The statement that correctly pairs biotic factors with an effect on the biosphere is that biotic factors would decrease the oxygen in the soil.

<h3>What are biotic factors?</h3>

Biotic factors of an ecosystem refers to the living components of that ecosystem. Biotic factors include the following:

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  • Microbes
  • Animals

Biotic factors make use of oxygen in the atmosphere to perform the process of respiration, hence, their presence will cause a decrease in the oxygen content.

Therefore, the statement that correctly pairs biotic factors with an effect on the biosphere is that biotic factors would decrease the oxygen in the soil.

Learn more about biotic factors at: brainly.com/question/11274302

5 0
2 years ago
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