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Svetllana [295]
2 years ago
12

What is a stem cell?

Biology
1 answer:
Scorpion4ik [409]2 years ago
5 0

A stem cell are undifferentiated cells in tissues like bone marrow and the brain in the adult body.

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why would shuffling genetic material to produce new combinations of characteristics be advantageous to a species?
Radda [10]

Answer:

Suffling of genetic material increases genetic variation in offspring which is important for evolution.

Explanation:

Genetic shuffling or genetic recombination helps in the formation of new trait combinations which increase the genetic variation in the population and this genetic variation is very much important for the evolution of species.

In sexual reproduction, the genetic shuffling occurs during the formation of gametes when the two homologous chromosomes exchange their genetic material with each other. This increase variation in gametes.

Fusion of two different gametes in sexual reproduction also helps in increasing the genetic variation in the offspring.

8 0
3 years ago
State what enzymes are made of
creativ13 [48]
Enzymes are large molecules that speed up the chemical reactions inside cells. Each type of enzyme does on specific job. Enzymes are a type of protein, and like all proteins<span>, they are made from long chains of different </span>amino acids<span>.</span>
4 0
3 years ago
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Both dna and rna are made of subunits or building blocks called
Trava [24]
Sugar-phosphates and nucleotides
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PLEASE HELP!!! List the following objects in order from smallest to largest
OLga [1]

Answer:

From smallest to largest they are: Asteroid, planet, star, solar system, galaxy, and then universe

Explanation:

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3 years ago
Explain how precipitation affects the phosphorus cycle
Blizzard [7]

Answer:

Disrupts the nitrogen cycle by contaminating the groundwater and making it more difficult for the plants to absorb the nitrogen and causes the phosphorus cycle to accelerate, resulting in an excess of phosphorus in water and soil.

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