<span>Four laws or principles are involved with the study of stratigraphy. They are </span><span>law of original horizontality, </span><span>law of superposition, law of original lateral continuity, and </span>law of cross-cutting relationships
Answer:
failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during mitosis. Nondisjunction results in daughter cells with abnormal chromosome numbers (aneuploidy).
Explanation:
- inhibition of FSH and LH secretion
Explanation:
The menstrual cycle begins as FSH stimulates development of an ovarian follicle. As this follicle matures, it begins producing a small but steadily rising amount of estradiol. This low level of estradiol causes: Negative feedback: inhibition of FSH and LH secretion.
