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Artist 52 [7]
3 years ago
9

How is mutation random and natural selection not

Biology
1 answer:
WARRIOR [948]3 years ago
4 0

Answer:

Explanation:

jb

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If the DNA triplets are 5’ ATG-CGT 3’, the mRNA codons are what?
USPshnik [31]

Answer:

it have opposite of DNA ,like 3 to 5 prime sequence

Explanation:

8 0
3 years ago
Match the organ to the number showing the order of blood flow in the circulatory system.
trasher [3.6K]

Answer:

What sends oxygenated blood back to the heart from the lungs?

Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.

Explanation:

3 0
3 years ago
Which of these is an environmental cost of tar sands extraction? A. Acid rain
Verizon [17]

Answer:C habitat loss

8 0
4 years ago
How do animal cells, Plant cells, freshwater protists, and
Romashka [77]

Answer:

Plant cells deal with osmosis by being enclosed in a cell wall.

Animal cells use active transport systems to deal with the problem of osmosis.

Fresh water protists have contractile vacuoles to deal with osmosis.

Many bacteria have cell wall to protect them from osmosis.

Explanation:

Plant cells have a rigid cell wall. If a plant cell is places in a place where the conditions are hypotonic, then the cell will tale up water by osmosis but the cell wall will prevent it from bursting. This condition is termed as the cell being 'turgid'.

As animal cells do not have the rigid cell wall, they use the mechanism of active transport system to stop the cell from bursting during osmosis. In this process, ions are moved out of the cell so that the pressure in the cell due to osmosis can be reduced.

Fresh water protists have a structure present in them called as the contractile vacuole. The contractile vacuole has the capability to remove any excess water from the cell as well storing water if there is not enough water.

Bacteria have peptidoglycan cell walls to prevent osmosis.

6 0
3 years ago
Determine the correct order of the genes on the chromosome, given the following information: Genes A and D cross over at a rate
lukranit [14]

Answer:

<h2>L-A-D</h2>

Explanation:

Given:

In crossing over percentage equals to map unit, so  22 %  equals to 22 map unit.

A and L are 6 map unit are closest one.

L and D are farthest away  and have 27 map unit distance.

A-D =22 map unit

A-L = 5 map unit

L-d = 27 map unit

so the sequence of genes is  L-A-D

5 0
3 years ago
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