1. Why is not Mendel’s second
law always valid for two or
more phenotypical traits of an
individual?

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Mendel’s second law, or law of the
independent , is valid for
genes in different chromosomes.
These during meiosis segregate
independently.

’s second law however is
valid for phenotypical features
by genes located in
same chromosome (genes under
), since these genes, known
linked genes, do not in meiosis
(except for phenomenon of crossing
over).