Lecture 2 Exam 2

UIC BioS 101 Nyberg

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Mendel’s Laws

• Mendel’s 1st law is dominance.

• Mendel’s 2nd law is segregation of alleles in gamete formation.

• Mendel’s 3rd law is that different loci assort independently.

• Neither the 1st or 3rd Laws have proved to be universally true, but the hypotheses of Mendel provide a framework to evaluate genetic results.

Speaker Notes:

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Violations of the law of independent assortment provided the basis for understand genes as strings of DNA.