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AnnZ [28]
3 years ago
15

What occurs in prophase I?

Biology
1 answer:
kap26 [50]3 years ago
4 0

Answer: Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears. ... At the start of prophase I, the chromosomes have already duplicated. During prophase I, they coil and become shorter and thicker and visible under the light microscope.

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How long does it take young earthworms to emerge from eggs?
Sav [38]

<u>Answer:</u>

<u>Answer:three weeks to five months</u>

Explanation:

Young worms hatch from their cocoons in three weeks to five months as the gestation period varies for different species of worms. Conditions like temperature and soil moisture factor in here if conditions are not great then hatching is delayed.

7 0
3 years ago
Which of the following describe a stem cell? Select three options.
telo118 [61]
Where is the options ???!!!
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Which of the following is true of viroids? View Available Hint(s) Which of the following is true of viroids? There are similarit
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Answer:Viroids are short pieces of naked RNA or DNA molecules without a protective coat of protein or lipoprotein.

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3 0
3 years ago
Answer the following questions based on the article you just read.
levacccp [35]

Answer:

Light microscopes can only magnify up to 2000 times the original size. It is difficult to enhance the contrast between cells and their surroundings to see cell structure and movement with a light microscope.

Explanation:

k12

HAPPY FRIDAY!

HAVE A GREAT WEEKEND!

sorry caps!

Please give crown for more!

AND PLZ ANSWER MY Q!

7 0
3 years ago
Humans are diploid organisms, and their gametes contain 23 chromosomes. Fill in the blank in each sentence using the terms. Each
USPshnik [31]

Answer:

2n, n, diploid

Explanation:

<em>When the somatic cells of human are in interphase, the ploidy level is denoted as </em><em>2n (diploid)</em><em>. The ploidy level of the human's gametes is denoted as </em><em>n (haploid)</em><em>. The 2n number of a human is </em><em>diploid</em><em>.</em>

Somatic cells are also known as vegetative cells and all somatic cells of humans have diploid number of chromosomes. At interphase, the number of chromosome remains diploid (2n) but the amount to DNA is doubled at the synthesis phase of the interphase.

Human gametes are formed through meiosis - the division of sex cells in the human body. Meiosis results in the halving of number of chromosomes of cells. Hence, all human gametes contain half the number (n = 23) of chromosome of vegetative cells.

Humans are diploid organisms with diploid (2n = 46) number of chromosomes in their vegetative cells.

5 0
3 years ago
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