Explain : Analyse punnet squares and pedigree charts

Punnett square is a graphical way of showing all possible outcomes of a cross. Therefore, it is useful to predict the genotypes resulting from a monohybrid or dihybrid cross. In contrast, pedigree analysis is a chart that shows the inheritance pattern of a trait (gene) in three or more generations of a family.

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

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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