Topic 14-2 Flashcards
one gene masks the effect of another gene at a different locus
epistasis
the gene that does the masking
epistatic gene
the gene that is being masked
hypostatic gene
true or false: epistatic genes are only dominant
false, they can be either dominant or recessive
in recessive eipstatis, ______ recessive allele(s) for an ______ gene are needed to mask ______ gene phenotypic expression
two, upstream, downstream
in dominant epistasis, _______ recessive allele(s) is(are) required in ________ gene for masking effect
one, upstream
differential expression of genetic material depending on whether it is inherited from the male or female parent
genomic imprinting
genomic imprinting shares interesting parallels with:
X-inactivation
genomic imprinting involves _______ of the DNA/genes, which alters gene expression
methylation
genomic imprinting is a type of:
epigenetics
traits that are encoded in mitochondrial genome exhibit:
cytoplasmic inheritance
reciprocal crosses give ______ results when cytoplasmic genes encode a trait. why?
different, bc cytoplasmic genes are passed only from mother to offspring
cytoplasmically determined traits display extensive:
phenotypic variation
do mitochondria have mechanisms to ensure equal separation of genomes during meiosis/mitosis?
no
phenomenon where the phenotype of the offspring is determined by the genotype of the mother
genetic maternal effect
