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Katarina [22]
3 years ago
13

The purpose of "crossing over" is

Biology
1 answer:
Gennadij [26K]3 years ago
5 0
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome with a unique pattern of genetic material.
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Biologists refer to the number of chromosomes with an "#n". For example, 1n for one copy of chromosomes and 2n for two copies. H
DIA [1.3K]

Answer:

haploid/diploid

Explanation:

The number of chromosomes can also be expressed as <em>haploid or diploid</em>, instead of 1n for one copy and 2n for two copies.

The <u>haploid number of chromosomes also refers to a copy of the chromosomes or half of the genome of organisms</u> while <u>the diploid number of chromosomes refers to the double or complete set of chromosomes in the genome of organisms. </u>

So, in other words: n = haploid and 2n - diploid.

7 0
3 years ago
The dynamo theory states that earth's magnetic field is created in the layer known as the ____?
weqwewe [10]
The dynamo theory states that earths magnetic field is created in the layer known as the core.
8 0
3 years ago
cA cell in G1 of interphase has 12 chromosomes. How many chromosomes and DNA molecules will be found per cell when this original
kaheart [24]

Answer:

Prophase II meiosis-chromosomes-6 and 12 DNA molecules per cell.

Explanation:

Meiosis is a unique type of division that occur in cells in which the chromosome number is decreased to half with the creation of haploid cells. It can be referred to as reduction division and it mostly occurs in organisms which go through sexual reproduction.

In prophase II , the nucleoli and nuclear membrane disappear.

The chromatids reduces in length to become short and thick .

The centromeres migrates to the polar regions and set the spindle fibres in place for the second meiotic division.

Therefore, at Prophase II of meiosis

The daughter cells are haploid. Its haploid cells should possess six chromosomes and 12 DNA molecules.

5 0
4 years ago
Currents are caused by the interaction of wind, waves, and land formations. What type of current brings cold, nutrient-rich wate
neonofarm [45]
It would be “Upwelling Currents” this is a is vertical current to the coastline, and it brings up nutrients from the bottom of the sea floor, to the ocean surface. (Also that explains why the water is cold)
6 0
3 years ago
Read 2 more answers
Why would it be difficult for the motion of the Earth to suddenly change?​
SCORPION-xisa [38]
I think because of the gravitational pull
4 0
3 years ago
Read 2 more answers
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