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netineya [11]
3 years ago
6

What is a stem cell?

Biology
2 answers:
Ulleksa [173]3 years ago
5 0

Answer:

A stem cell is an undifferentiated somatic cell that may specialize into anytype of somatic cell. for example a stem cell  may specialize into a skin cell, a bone cell, or a neuron.

Explanation:

Stem cells may also fix damaged tissues

zysi [14]3 years ago
5 0

Answer:

idk

Explanation:

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From the given observations we can say that there are 2 genes that are responsible for normal learning. It is also given that the dunce and rutabaga mutations are the mutations of 2 different genes.

Due to complementation which is a phenomenon of restoration of normal phenotype if mutants are crossed, it is found that the flies have normal learning behavior if both mutants are crossed.

Let's assume that the Drosophila having this learning effect and it is due to genes D and R where D is the normal gene and dd is the case of mutation that results in duncy phenotype. Similarly, Gene R is responsible for normal learning, and rr results in rutabaga phenotype.

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1. (2 points) If the number of pythons increases then the death rate of marsh rabbits will
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The analysis of the nitrogenous bases of the nucleic acid of a newly discovered virus showed 20% adenine, 40% guanine, 10th% thy
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