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.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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