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Yanka [14]
3 years ago
7

1. A mutation is a ___ in the nucleotide sequence of a gene within the DNA molecule.

Biology
1 answer:
kari74 [83]3 years ago
4 0
1. A mutation is a "Change" <span>in the nucleotide sequence of a gene within the DNA molecule.

2.</span><span>Chemicals that cause a mutation are known as "Mutagens" 

Hope this helps!</span>
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If the statement is true, write true. If the statement is false, change the underlined word
Lesechka [4]

Answer:

true

Explanation:

3 0
3 years ago
Please help I am on a timer.... Also this is 7th grade biology.
kirza4 [7]

Answer:

D

Explanation:

Hope it helps

5 0
3 years ago
A Hypertonic solution outside of the cell has how much solute compared to the solution inside of a cell?
Sveta_85 [38]
A hypertonic solution occurs when the solute leaves the cell as there is a large salt concentration outside of the cell
3 0
3 years ago
________ thousands of tiny projections that add even more surface area to villi​
victus00 [196]

Answer:

Each villus, in turn, has thousands of even smaller projections called microvilli (singular: microvillus).

Explanation:

The villi contain capillaries, which are tiny blood vessels. Nutrients are absorbed into these capillaries across the surfaces of the villi and microvilli. Because there are millions of these tiny projections, they greatly increase the surface area for absorption.

6 0
2 years ago
Scientists have successfully cloned animals, including mammals such as sheep. Which statement provides the most likely reason th
tigry1 [53]

Answer:

4) Some people consider human genetic experiments

unethical.

Explanation:

1) Humans have DNA that is structurally very different from

other mammals.

2) Cloning can only he performed on animals that normally

reproduce asexually.

3) Human genes are made of too many different types of

simple sugars.

4) Some people consider human genetic experiments

unethical.

The statement that provides the most likely reason that a human has not yet been cloned is that some people consider human genetic experiment unethical.

<em>Option 1 is incorrect because human DNA is similar in structure to other living organisms with components such as a phosphate group, a deoxyribose sugar and purine/pyrimidine bases.</em>

<em>Option 2 is incorrect because cloning is not limited to asexually reproducing organisms only. Sheep, for example, produces only sexually and has been successfully been cloned.</em>

<em>Option 3 is incorrect because human genes, just like every other organisms is consist of DNA with deoxyribose pentose sugar being one of the components. The situation of too many different types of simple sugars doe not arise.</em>

The correct option is 4.

6 0
3 years ago
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