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Lina20 [59]
3 years ago
13

What time period lasted for more than half of the hypothesized history of the Earth?

Biology
1 answer:
prisoha [69]3 years ago
4 0
The best answer to this would be Proterozoic (although it actually lasted a little less than half by estimates, but it's the longest period.)

It started around 2500 million years ago and lasted till 500 million years ago- 2000 million years long. The estimated age of Earth is 4500 million years old -a little over twice this period
 

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Which of the following is NOT a stage in the cell cycle?
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Answer:

C. Development

Explanation:

The cell cycle involves two major kinds of division; mitosis and meiosis. These divisions is each composed of stages/phases. Mitosis, for example, is divided into: interphase and mitotic (M) phase.

The interphase stage consists of Gap 1 (G1) phase, Synthesis (S) phase and Gap 2 (G2) phase while the mitotic phase consists of mitosis and cytokinesis etc. Hence, according to the question, development is not a stage of the cell cycle.

6 0
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Which of the following correctly identifies the types of cell division described in rows X and Y?Row X and Y describe mitosis.
sattari [20]

Answer: Row X describes meiosis, while row Y describes mitosis.

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Therefore, if the parent cell has 14 chromosomes, the daughter cells will have 7 chromosomes.

In mitosis, a cell divides once to produce two identical daughter cells each with the same number of chromosomes as in the parent cell.

Therefore, if the number of chromosomes in the parent cell is 14, the daughter cells will have 14 chromosomes.

5 0
4 years ago
A structure has these features:
prisoha [69]

Answer:

plasmid or it can be the telomere im

pretty sure.

Explanation:

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3 0
3 years ago
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8 0
4 years ago
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