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nasty-shy [4]
3 years ago
6

What must happen to a chromosome before a cell starts mitosis?

Biology
1 answer:
slamgirl [31]3 years ago
3 0
The chromosome must be duplicated before mitosis.

Mitosis is where a parent cell divides and produces 2 genetically indentical daughters cells. This process first requires the parent call to duplicate all of its genetic material. This ensures that the daughters cells are genetically identical to the parent cell and also the other daughter cell.

This is important because mitosis is used in many cases in living things such as growth, repair, and more. This ensures us for example not suddenly changed to another organism or another characteristic.
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4. When was the first STS mission?<br> O 1958<br> O 1969<br> 0 1981
faust18 [17]

Answer:

1981

Explanation:

<em>"A new era in space flight began on April 12, 1981, when Space Shuttle Columbia, or STS-1, soared into orbit from NASA's Kennedy Space Center in Florida."</em>

4 0
3 years ago
What step number do you always start with when using a dichotomous key?
77julia77 [94]

Answer:

1

Explanation:

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7 0
2 years ago
An estuary in Texas gets cut off from the sea by the accumulation of sediment and sand at the mouth of the river. What type of g
Monica [59]

Answer:

lagoon

Explanation:

As the estuary gets more and more sediments, the deposition of them is constantly on the rise, affecting the landscape and forming new geographical features. With the sediments constantly building up, they eventually cut off part of the water from the sea. They will form a closed pool-like feature, filled with water, and surrounded by sediments, cut off from the sea. It will have shallow water, and because the water is stagnant and shallow it will have higher temperature than the other water. This geographical feature is known as lagoon.

4 0
3 years ago
Are species in the same family more or less closely related than species in the same class?
katrin [286]
The classification is in this order: Kingdom, Phylum, Class, Order, Family, Genus Species. 
The kingdom is the largest group, it contains the largest number of organisms who are the least related.
The species is the smallest group, it contains the least number of organisms who are closely related.
As you go down, from "Kingdom", species become more closely related.
So species in the same family are MORE closely related than species in the same class.
4 0
3 years ago
What would happen to an organism if its cell membranes became permeable to most substances
levacccp [35]

It would die after harmful substances entered the cell. This would happen because it would burst due to over-bulging.

4 0
3 years ago
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