What is the difference between meiosis I and meiosis II? Select one:
a. Meiosis II results in four haploid cells instead of two diploid cells.
b. Meiosis I has a prophase stage, but meiosis II does not.
c. Nuclear membranes form during meiosis II but not meiosis I.
d. Cytokinesis occurs during meiosis II but not meiosis I.

In meoisis I, homologous chromosomes separate while meiosis II, sister chromatids separate

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in which structure in the nucleus are ribosomes made?

b) nucleolus!

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the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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