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Vladimir [108]
3 years ago
14

During MEIOSIS, an event called crossing over occurs. Explain what happens during this event.​

Biology
1 answer:
RoseWind [281]3 years ago
3 0

Answer:

During meiosis, an event known as chromosomal crossing over sometimes occurs as a part of recombination. In this process, a region of one chromosome is exchanged for a region of another chromosome, thereby producing unique chromosomal combinations that further divide into haploid daughter cells.

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Es una fuente de energía no contaminante​
Zarrin [17]

Respuesta: Energía eólica.

Explicación: La energía eólica o las cosas que utilizan energía eólica, como las turbinas eólicas, no liberan emisiones que puedan contaminar el aire o el agua. Por tanto, una fuente de energía no contaminante.

Espero que esto ayude, buena suerte! :)

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An infection caused by the bacterium treponema pallidum, which is usually transmitted by sexual contact, is called
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6 0
3 years ago
Which of the following lists steps of mRNA production in eukaryotes in the correct order?A) 5' cap addition, addition of poly-A
Assoli18 [71]

Answer:

The correct answer is B) Transcription, 5' cap addition, addition of poly-A tail, exon splicing, passage through nuclear membrane.

Explanation:

The transcription process in eukaryotes takes place in the nucleus of the cell and after transcription post-transcriptional modification also takes place in the nucleus which is necessary to guide the mRNA out of the nucleus.

First, the process of transcription takes place in which DNA is transcribed to mRNA by an enzyme called RNA polymerase. After transcription post-transcriptional modifications takes place in the given order.

1. Capping: In capping process 7-methylguanosine is added by capping enzyme at 5' end of mRNA.

2. Polyadenylation: In polyadenylation, many poly-A residues are added at the 3' end of the mRNA called the poly-A tail.

3. Intron splicing: Introns are the non-coding sequence present in mRNA which are spliced out of mRNA and all exons are joined together.

After these post-transcriptional process, the mature mRNA is transported out of the nucleus through the nuclear membrane.

5 0
3 years ago
Plant reproduction requires the presence of auxins, as well as a large amount of sugar for energy. Which two main plant tissues
IrinaVladis [17]

Explanation:

The two main plant tissue that works together to release sugar and carry hormones so that reproduction can take place are: The ground and the vascular tissue.

9 0
3 years ago
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The measure of the maximum load a stream can transport is called its _____.
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Competence is the answer to this question

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