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liberstina [14]
3 years ago
14

Which of the following increases genetic variation by forming entirely new alleles?

Biology
1 answer:
kicyunya [14]3 years ago
4 0

Answer:

Mutation causes brand new alleles the others just modify the rates at which preexisting alleles appear in the population.

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Identify the labeled structures. A B C D E
DerKrebs [107]

Answer:

A is cell wall

B is valcuole

C is mitochondria

A is ribosome

D is nucleus

3 0
3 years ago
Three species of lizard, labeled A, B, and C, are being studied using molecular analysis by two research colleagues in different
Andreyy89

Answer:

The most appropriate answer would be option B.

The flaw in their reasoning is that they compared different molecules in a different set of organisms.  

For example, they compared the DNA of lizard A and B whereas they compared the RNA of lizard B and C.

In addition, the mutation rates of different molecules (DNA and RNA) are different and thus, comparison of DNA in one set of organism and comparison of RNA in another set cannot be used as the basis for the conclusion.

7 0
3 years ago
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In which process are the chromosomes separated into chromatids?<br> A. Meiosis<br><br> B. Mitosis
kykrilka [37]
It think its mitosis because the get denser then they separate so they can make a new cell. Hope this helps
7 0
3 years ago
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1. What evidence supports the notion that sponges are some of the earliest known multicellular animals?
Serga [27]

<u>Answer:</u> "Chemical fossils"evidence supports the notion that sponges are some of the earliest known multicellular animals.

<u>Explanation:</u>

Sponges are multicellular animals, may belong to Ediacarian period likely to be 80 million years ago or earlier. They catered through a complex system of internal channels, by moving seawater.

Sponges are soft-bodied and very rarely protected as fossils, therefore finding evidence of existence is giant task. The key of their existence came to know from abnormal chemicals which is a steroids of a particular type generated sufficiently by them but virtually never by ordinary organisms.

Analysis of long strata sequence found in Oman and researchers have been able to extract these "chemical fossils" from samples spanning tens of millions of years — before, during and after the Ediacarian period.This gave clear evidence that sponges had to have evolved long before the great variety of multicellular organisms proliferated at the dawn of that time.

8 0
2 years ago
What is the cell Body​
Tomtit [17]

Answer:

cell body is the feelings of our heart

Explanation:

need ko na po

3 0
3 years ago
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