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SpyIntel [72]
3 years ago
10

What determines whether an allele is dominant recessive or codominant?

Biology
1 answer:
expeople1 [14]3 years ago
6 0
Based on the gene expression for instance if one parent is tall and and one parent is short it depends if the child is tall or short. if the child is tall then tallness is dominant ans shortness is recessive if the child is short that shortness is dominant and tallness is reccesive. however for codominance its a blending or mixture of both alleles. if a white flour and red a flower are mixed and its offspring is pink that is codominance. hope it helps!
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Answer:

Destruction of the majority of the adrenal cortex would most likely result in decreased levels of mineralocorticoids, sex corticoids and glucocorticoids.

Explanation:

Adrenal glands are conical pyramid shaped glands. A pair of glands present above each kidney. It has an outer adrenal cortex region and inner adrenal medulla. Cortex and medulla secrete different hormones and are also regulated in different ways.

Adrenal cortex has three layers:

a. Outer zona glomerulosa: secretes mineralocorticoids like aldosterone - regulates the metabolism of sodium and potassium.

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c. Inner zona reticularis: secretes sex corticoids like Androstenedione -  stimulates the development of external sexual characteristics in males.

In a condition called Addison's disease, major part of the adrenal cortex is destroyed which results in deficiency of both mineralocorticoids and glucocorticoids. Symptoms include bronze like pigmentation of skin, low BP, low plasma levels of Na+, high plasma levels of K+, nausea, vomiting and diarrhoea.

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