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Yuri [45]
3 years ago
9

The following questions refer to the essential steps in Meiosis described below.

Biology
1 answer:
juin [17]3 years ago
3 0

Answer:

3. Separation of sister chromatids

Explanation:

Before entering mitosis or meiosis, DNA contained in a cell duplicates and  and each chromosome will have two sister chromatids.

  • In mitosis the sister chromatids separate to produce two daughter cells that have the same information as the original cell before the DNA duplicated.
  • On the other hand, meiosis consists of two cell divisions. During meiosis I, homologous chromosomes separate, producing two daughter cells that have half the information the original cell had, but each chromosome still has two sister chromatids. During meiosis II, the sister chromatids separate, and each daughter cell produces two more daughter cells, that now have a single homologous chromosome of the pair, and which has a single chromatid.

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The shape of the cell changes in_______
LiRa [457]

Answer:

Its Euglena

Explanation:

Shape change from normal elongated egg-shape to round-shape in stressful environment. These shape changes attain two transition phases. The I-transition phase is reversible where the organism can return to normal if favourable environment persists.

5 0
3 years ago
G you extracted your dna from cheek cells. the concentration of your dna sample is 250 ng/μl. the dna template for pcr should be
Karo-lina-s [1.5K]
You should mix 4µl of DNA sample and complete it with 96µl (100-4) of water.

You can figure this out by using  C1.V1 = C2.V2
C1 = 250 <span>ng/μl (Sample Concentration)
</span>V1 = ?          (the necessary volume to take from the DNA sample)
C2 = 10 <span>ng/μl (PCR concentration)
</span>V2 = 100 µl (total volume)

V1 = \frac{C2 . V2}{C1} = \frac{10 . 100}{250} = 4µl

For the water: 100µl (total volume) = 4µl + Water
Water volume = 96µl
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Dmitry [639]
The answer should be RNA readers and translates the DNA code.
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Read 2 more answers
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