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MakcuM [25]
3 years ago
9

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists c

an add, remove, or modify sections of the DNA sequence.
How can scientists use this technique to control gene expression?
A.By activating or deactivating specific genes
B.By determining the number of chromosomes in an organism.
C.By calculating the number of genes different organisms produce
D.By identifying how closely related one individual is to another
It can be a decimal number but is often written as a fraction and seldom as a mixed number
Biology
2 answers:
LekaFEV [45]3 years ago
4 0

Answer: A,

by activating or deactivating specific genes

Explanation:

chubhunter [2.5K]3 years ago
3 0

Answer:

Explanation: is A :)

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Answer:

Yes

Explanation:

They are all animals no matter what species

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When brown iodine is exposed to starch it turns dark purple. In an experiment, you placed a cornstarch solution in a small plast
Pachacha [2.7K]

Answer:

b) the plastic bag was permeable to iodine

the plastic bag was selectively permeable

the iodine moved into the plastic bag.

the plastic bag was permeable to cornstarch.

Explanation:

The experimental set up represented the concept of osmosis.That is  the movement of water  molecules from the region of higher  water potential to region of lower water potential through a semipermeable membrane(a  cell membrane which only allows water and certain molecules to pass through,but restrain other molecules through its pores.

Generally potassium iodine test is the standard test for starch.

Therefore, in the question,water moves iodine molecules as iodine solution(from high water potential) to move across the paper bag(semi permeable membrane) to the reach the corn solution.(low water potential,high solute potential).This turns the starch in the corn solution  blue-black/purple.

4 0
3 years ago
As the days shorten and winter approaches, the leaves of deciduous birch trees living in Florida turn yellow and begin to fall o
tekilochka [14]

Answer:

D. The rest of the country has only evergreen trees, so autumn is much less colorful in those areas.

Explanation:

The deciduous birch forests of the eastern United States have been reducing their territory by anthropic action. Yet in Florida it still persists. In these forests, plants such as birches do not support the harsh winters and that is why they have the strategy of losing their leaves. they start to turn their yellow leaves in the fall season. In other areas of the country where there are coniferous forests, grasslands and grasslands, trees have other strategies and generally have evergreens trees.

5 0
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Signals from the ___ system cause contractions in skeletal muscles. A. Respiratory B. Endocrine. C. Nervous. D. Digestive
Andru [333]
Answer: C) Nervous Sytem
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2 years ago
How do we think bacteria reproduce and<br> grow?
Greeley [361]

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bacteria reproducer by binary fission which is a single cell divides into two identical daughter cells .

Explanation:

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