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Arturiano [62]
3 years ago
14

What is the purpose of crossing-over in meiosis

Biology
2 answers:
hodyreva [135]3 years ago
8 0

crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . At that stage each chromosome has replicated into two strands called sister chromatids.


Please don't report me

AveGali [126]3 years ago
6 0

Answer: crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . At that stage each chromosome has replicated into two strands called sister chromatids.

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babunello [35]

Answer:

The cyclist’s displacement is +5 m.

Explanation:

We have, A cyclist starts at a position of origin. He takes 3 s to move east to a position of +8 m. He then cycles west to a position of +5 m which takes an additional 2 s.

It is required to find the cyclist’s displacement. Displacement of an object is the shortest path covered by it or it is given by the difference of final to the initial position.

Finally, he cycles west to a position of +5 m. Distance between final and initial position is +5 m.

Hence, the cyclist’s displacement is +5 m.

3 0
3 years ago
What is this an example of?<br> O adaptation<br> O biodiversity<br> O isolation<br> O variation
Mashutka [201]

Explanation:

1] ADAPTATION : WE HAVE BEEN ADAPTING A DOG AS A PET.

2] BIODIVERSITY : BIODIVERSITY IS THE VARIABILITY AMONG LIVING ORGANISMS FROM ALL SOURCES INCLUDING TERRESTRIAL, MARINE, AND OTHER AQUATIC ANIMALS

3] ISOLATION : THE PROCESS OR FACT OF ISOLATING OR BEING ISOLATED

4] VARIATION : DIFFERENCE BETWEEN ORGANISMS OR PLANTS

SO, THIS IS YOUR ANSWER

8 0
3 years ago
Read 2 more answers
Which best represents the role of the cell cycle in repair of an organism? an active cell cycle from a puncture wound an active
anygoal [31]

Answer:

The cell cycle best repairs organism from a puncture wound.

Explanation:

Repairing in organism means restoration of damaged tissue and its functioning. In a cell cycle, a tissue is repaired through the process of Mitiosis in cell division. It helps in growth of cell.

Through this process identical cell copies are produced by which the punctured wound or damaged tissue is replaced.  Thus, cell cycle is seen in playing an important role in repairing an organism.

4 0
3 years ago
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In selective-breeding procedures, members of a species that display a particular attribute are bred to each other. if the partic
vovikov84 [41]
... increase their chances of displaying this said attribute in higher incidence and frequency
5 0
3 years ago
Explain how nerves signal muscles fibers to contrast?
laila [671]

Answer:

By action potential nerve contract the muscle

Explanation:

The muscle contract when the nervous system sends action potential to the muscle. So the nervous system delivers signal to muscle, the first signal reaches the neuromuscular junction. The signals are passed by a chemical messenger called neurotransmitter release by motor neurons, the chemicals bring reaction and shorten the muscle fibre. When neurotransmitter are absent or reduce in concentration the process reverse and muscle relax again.

7 0
3 years ago
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