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Stels [109]
3 years ago
9

Which of the following is the most accurate definition of a gene?

Biology
2 answers:
ioda3 years ago
7 0
I would say either A or B
mojhsa [17]3 years ago
7 0

Answer:

A gene is a segment of a DNA molecule that directs the development of some inherited traits.

Explanation:

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honey dont cheat

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7 0
2 years ago
Select the correct answer.
marshall27 [118]

Answer:

The answer is C

Explanation:

8 0
3 years ago
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Explain why sex-linked traits show up in males more often than females. Draw a punnett square
julia-pushkina [17]
Sex-linked traits show up in males more often because they only have one X chromosome (males are XY) and females have 2 (XX)

No daughters will actually have hemophilia, but they could be a carrier
There is a 50% chance that if they have a son he will have hemophilia
4 0
3 years ago
Give the role of air in an ecosystem
Radda [10]

Sustain Life and Growth

Air consists one of the main life-sustaining gas called oxygen. Almost all living things breathe in and breathe out this air. Nitrogen and Carbon dioxide are also other gases that are vital for plants and their growth.

Combustion

Apart from this, air supports burning or combustion. The oxygen present in air help in burning of the fuels to basically carry out activities like cooking food, running industries and vehicles as well as generating heat and electricity.

Temperature Control

Another important aspect of air is that it helps in maintaining the temperature on the earth surface by circulating hot and cold air. Air acts as a conductor of heat as well. Even phenomena such as water cycle are dependent on air.

Supplier of Energy

Air which consists of energy is one of the main suppliers of energy. Living things are made up of cells and these cells extract oxygen within the blood to produce energy usually in the form of ATP. This biochemical generation of ATP is essential to maintain life on the earth.

Photosynthesis

Carbon dioxide, which is a component of air is used by plants during the process of photosynthesis. Here oxygen is also released by plants. And we already know how vital oxygen is.

3 0
2 years ago
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Some objects in space are created from clouds of gas and dust. What will happen if the cloud does not have enough mass?
Westkost [7]

Some objects in space are created from clouds of gas and dust. A star forms when the mass of the dust cloud is large and has enough hydrogen to start creating a protostar and sustain the nuclear fusion reaction within the core of the protostar. If the dust cloud is not dense enough, then the star formation does not take place, rather a nebula is formed, example the Horse-head nebula. So the answer is (B) A star will not form.

6 0
3 years ago
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