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Vikki [24]
2 years ago
11

Crossing over contributes to genetic variation by exchanging chromosomal segments between:_____.

Biology
1 answer:
yulyashka [42]2 years ago
3 0

Crossing over contributes to genetic variation by exchanging chromosomal segments between non-sister chromatids of homologous chromosomes.

What is crossing over?

  • Crossing over is the exchange and recombination of genetic components between the homologous chromosomes.
  • This occurs in the pachytene stage of the meiosis-1 of the meiotic division.
  • Crossing over occurs with the help of an enzyme and the enzyme responsible for crossing over is called Recombinase.

Thus, crossing over contributes to genetic variation by exchanging chromosomal segments between non-sister chromatids of the homologous chromosomes.

Learn more about crossing over: brainly.com/question/927405

#SPJ4

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Does any landform on Earth’s surface look the same as it did 5 million years ago? explain why or why not.
Sophie [7]

Answer:

Earth's surface didn't look much different. With few exceptions.

The global climate is cooler and drier, and seasonal, similar to modern climates. As the climate began to cool down grasslands continued to expand and forests started to dwindle in extent. In the seas, kelp forests made their first appearance and soon became one of Earth's most productive ecosystems. Water from the Atlantic Ocean poured in through the Strait of Gibraltar to deluge the Mediterranean Basin. The event is called the Zanclean flood. Parts of of southern Norway and southern Sweden that had been near sea level rose to form the Hardangervidda plateau and the South Swedish highlands.

Shorty after, the glaciations, uplift of the Rocky mountains and Panama seaway closure began to reshape the Earth.

Explanation:

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3 years ago
What other cells structures does mitochondria work with?
maksim [4K]
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8 0
4 years ago
Ten facts about the cell wall
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How many ATP molecules are produced during fermentation
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7 0
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Consider the diagram of a eukaryote and a prokaryote. According to cell theory,
Artemon [7]

both are single cells that carry out the functions of life

Explanation:

Both eukaryotic and prokaryotic cells are single cells according to the cell theory and they carry out the functions of life.

  • The cell theory postulates that all living organisms are made up of cells and that the cells are the basic organizational unit of life.
  • It also proposes that all cells arise from pre-existing cells.

Eukaryotic cells differs from prokaryotic cells in that they have true nucleus and membrane bound organelles.

Despite this seeming different, both cells are able to carryout different life functions as unit and when they combine together, they advance into higher organization of life.

Learn more:

cell theory brainly.com/question/5597701

#learnwithBrainly

8 0
3 years ago
Read 2 more answers
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