Genetics Flashcards
What is an auotosome?
Autosomes are all the chromosomes except the sex chromosomes (X and Y).
What is Autosomal Linkage?
Linkage is when genes that are close to one another on a chromosome are likely to be inherited together.
Linkage shows that some allele combinations are not inherited independently of each other.
What is the term given to the fact there is no role of dominance and recessiveness in X-linked genes?
Hemizygosity
How are sex chromosomes different from autosomes?
Sex chromosomes are non-homologous (singular) where autosomes are homologous (pairs)
What is Epistasis
Multiple genes act in unison to produce the phenotype of an organism. Epistasis is when a gene at one locus inhibits the expression of a gene at another locus. Epistasis can be dominant or recessive.
How do drugs and therapies return abnormal gene expression to its normal level?
Reverse epigenetic change
