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Free_Kalibri [48]
3 years ago
5

The African and South American plate are 4000 km apart.

Biology
2 answers:
vlabodo [156]3 years ago
8 0
I think it’s b sorry if it’s wrong
12345 [234]3 years ago
3 0

I think the answer d

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A communicable disease that can be easily transmitted from person to person is which type of disease?
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What is the most important nutrient for energy?​
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Claim evidence reasoning mutation
olchik [2.2K]

Explanation:

-increases genetic variation

-increases the fitness of a species

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.

Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell. During the process of cell division, spontaneous changes within the genome can arise. These mutations are errors occur when copies of the DNA within the cell are made; mutations may range from small changes called single nucleotide polymorphisms, to large scale deletions, and additions which span multiple genes. There are two types:

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Like other events, such as crossing over during mitosis and meiosis, mutations lead to increases in genetic variation. This  variation refers to the genetic characteristics present within a species. Mutations are maintained within cells, as they form new traits called alleles, which may confer adaptations that increase the fitness of a species, along with ensuring survival by conferring a protective advantage

.

e.g. sickle cell anemia, a disease caused by a mutation, confers protection against the disease malaria.

Learn more about mitosis at brainly.com/question/4303192

#LearnWithBrainly

3 0
3 years ago
Where is a continental shelf usually found?
Xelga [282]

Answer:

D

Explanation:

I did this and got it right!

4 0
3 years ago
Read 2 more answers
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