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3 years ago

1. In humans, the starting cell in this process has 46 chromosomes.

Biology

1 answer:

mel-nik [20]3 years ago

5 0

Explanation:

Meiosis I

At the beginning of meiosis I, a human cell contains 46 chromosomes, or 92 chromatids (the same number as during mitosis). Meiosis I proceeds through the following phases:

■ Prophase I: Prophase I is similar in some ways to prophase in mitosis.

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The means for transmission of disease-causing microorganism is provided by the ____.

Sergio039 [100]

Answer: The means for transmission of disease-causing microorganism is provided by the direct or indirect contact.

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4 years ago

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What type of reaction is combustion of coal? A. endothermic B. physical C. heat-absorbing D. exothermic

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Exothermic - hope that helps x

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3 years ago

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b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t

saveliy_v [14]

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

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4 years ago

the genes stc1 and stc2, which share a common ancestor, are found in both zebrafish and humans. all four stc genes display simil

Temka [501]

Based on these facts, we can state that the genes of the two organisms had a eukaryotic origin.

We can arrive at this answer because:

Despite having exons, prokaryotes do not have introns in their genomes.
This means that if two organisms have the same sequence of introns and exons, they have a common ancestor, in addition to having their genes originated in a eukaryotic organism, which explains the sequence of introns.

This means that the genetic expression of these two organisms has similarities, even if they are organisms with different biological processes.

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2 years ago

1. Over time, the fish and crab populations have:

Marta_Voda [28]

1-D

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this is due to pollution

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3 years ago

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