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Setler79 [48]
3 years ago
12

I need this asap please

Biology
1 answer:
Ilia_Sergeevich [38]3 years ago
5 0

Answer:

yes

Explanation:

yno

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purity, value, composition, shelf life, potency, identity, and company appraisal.

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Coral reefs are built by a small organism called a polyp. The polyp creates the structure of the coral reef by building a ______
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1. Which of the following events is not a source of genetic variation in eukaryotic organisms?
Lunna [17]

Answer:

Mitosis

Explanation:

Mitosis is not a source of genetic mutation because it take place mostly in the somatic cells. This is because it does not lead to the production of gametes . In mitosis, the parent cells divide into two daughter cells and each daughter cells are genetically identical to the parent cell because they carry the same number of chromosomes as the parent cell. There is no genetic variation in this.

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3 years ago
Which endocrine gland is responsible for the release of a hormone that stimulates T-cell development and proper immune response
Mama L [17]

Answer:

The correct answer would be d. thymus.

The thymus is a specialized lymphoid organ of an immune system.

It serves as the site for training and maturation of T-lymphocytes or T cells.  

It is composed two identical lobes each containing outer region termed as cortex and inner region termed as medulla.

T-cells are first trained and selected in the cortex region via positive selection. In this, T cells which are able to bind to foreign antigens are selected and rest are degraded.

The selected T cells then move in the medulla region where they are selected by negative selection. In this, the T cells which binds to self-antigens are degraded and rest survive to become functional T cells.

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