Question

Spermatogenesis is promoted by
(a) estrogen (b) progesterone
(c) testosterone (d) oxytocin

Answer 1

Answer:

Explanation:

Short Paragraph on Desert

Category: Environment, Essays and Paragraphs

On February 25, 2017 By LightHouse

A desert is any large and dry area mostly dominated by sand or rocks, that receives little rainfall, and have unfavorable conditions for crops and agriculture, and poses harsh living conditions for human-beings.

One third or 33 percent of Earth’s land surface is covered with deserts. World’s largest desert is Antarctica, is a polar desert measuring 5.5 million square miles. Sahara, the largest non-polar desert, measures around 3.5 million square miles.

Answer 2

Answer:

The primary spermatocyte divides meiotically (Meiosis I) into two secondary spermatocytes; each secondary spermatocyte divides into two equal haploid spermatids by Meiosis II. The spermatids are transformed into spermatozoa(sperm) by the process of spermiogenesis.

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testosterone