Inheritance Flashcards
Monohybrid inheritance
the inheritance of a single characteristic controlled by one gene
genetics
the study of the mechanism by which an organism inherits characteristics from it’s parents
state Mendel’s law of segregation
the characteristics of an organism are determined by alleles that occur in pairs. Only one of a pair of alleles can be present in a single gamete
if 2 parents show a characteristic that is not present in their offspring, what does that mean?
that both parents are heterozygous(carriers) and the offspring is homozygous(recessive)
co-dominance
this is when both alleles express themselves equally in a heterozygous phenotype. both alleles are dominant
explain how multiple alleles can arise
through gene mutations
a change in the nucleotides, or the bases
in sex linkage, the alleles are only found on the
X chromosome
which type of inheritance is it if there are more than 2 phenotypes
co-dominance or multiple allele inheritance
epistasis
when one gene influences the expression of another gene
autosomal linkage
refers to when two genes are located on the same chromosome. this chromosome should not be a sex chromosome