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pogonyaev
3 years ago
12

Which of the following is true about gene duplications?

Biology
1 answer:
sveta [45]3 years ago
7 0

Answer:

The correct answer is Gene duplication create an identical or similar second copy of a gene.

Explanation:

Gene duplication is also called chromosomal duplication is a process by which similar copy of a gene is generated with respect to its precursor gene.

    Any type type of error during DNA replication or repair leads to gene duplication.

   There are many types of gene duplication process among them the most important is retrotransposition, aneuploidy,polyploidy etc.

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The question is: What is the relative age of layer 3? (Hint: With what absolute ages can you compare it?)
Olegator [25]
25 million years old probably
8 0
3 years ago
Disscus the importance of phytoplankton to the composition of the earth's atmosphere?​
Evgesh-ka [11]

Answer:

Phytoplankton are essential for atmospheric and climate regulation.

Explanation:

Phytoplankton are autotrophs, they use solar energy, along with inorganic carbon and water to produce their own food source via photosynthesis. During photosynthesis, they also produce oxygen, integral for the planet's atmospheric composition.

At their large biomass, phytoplankton contribute to a majority of the oxygen used by consumers (most animals).

             6 CO2 + 6 H2O + light  →  C6H12O6 + 6 O2

Carbon Dioxide + Water + Light       Glucose + Oxygen

Along with fossil fuels, human agricultural practices have contributed large amounts of CO2 to the atmosphere, This causes global warming, a major environmental crisis- global warming also leads to landmass loss, biosphere disruption and reduces biodiversity in mass extinction events.

Phytoplankton carbon cycling produces organic matter which functions as carbon sinks in our oceans. Thus, as phytoplankton use large amounts of CO2, they help combat warming cycles, along with producing O2 in atmospheric and climate regulation.

6 0
3 years ago
1. Which best describes the structure of a phospholipid?<br> WA<br> SER<br> .
Nataly_w [17]

Answer:

A phospholipid is consists of a glycerol backbone with a 2 fatty acids (either saturated or unsaturated) attached to it and a phosphate group, hence forming the head of the phospholipid molecule. I have attached a photo below for your reference.

5 0
3 years ago
Why is rna shorter than DNA?
leva [86]

Answer:

RNA is much shorter than DNA. DNA contains the code for making lots and lots of different proteins as well as DNA contains all the genetic in formation of the body whereas RNA does not contains

Explanation:

i hope this will help you :)

8 0
3 years ago
A prehistoric object is one that comes from a time .....?
My name is Ann [436]

Answer: A. before history was written.

Explanation:

I'm not sure if you need an explanation, but prehistoric means "very old or out of date." Hope this helps, Good luck! :)

8 0
3 years ago
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