Mendel and the Gene Idea
of several characters with
Mendel proposed "heritable
" (now known to be
) to explain his results based on two principles of inheritance.
allele determines a heterozygous individual's
The phenotype ratio of the offspring can be calculated from a
model called the
can be used to determine the
of an organism with the dominant phenotype.
Monohybrid Cross activity
Law of Independent
Crossing true-breeding parents differing in
in the F1 generation heterozygous for both traits, and
phenotypes in the F2 generation.
Dihybrid Cross activity
Review: Mendelian genetics activity
Extending Mendelian genetics.
, the phenotype of
is somewhere between the phenotypes of homozygotes.
, two dominant alleles affect the
Some traits exhibit
inheritance which often shows
, a gene at one locus may alter the phenotypic expression of a gene at a second
Inheritance in human families can be studied by analyzing a
showing the inheritance of alleles across