During the secretory phase of the menstrual cycle
a. progesterone levels are at their highest
b. lh reaches its highest levels
c. estrogen reaches its highest levels
d. the graafian follicle forms 1 points

Option A.

Explanation:

Secretory phase in menstrual cycle is the second half after ovulation.

During the secretory phase, the corpus luteum secretes high level of progesterone that prepares the endometrium wall for  implantation of an embryo and if fertilization does not take place, it results in menstrual flow.

Hence, the high level of progesterone takes place during secretory phase of menstrual cycle.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

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