test 3 matching Flashcards
an organisms genetic makeup is its __________
genotype
an organisms appearance is its __________
phenotype
in _________ a gene at on locus alters the expression of a gene at another locus
epstasis
_________ is an enzyme that synthesizes new DNA strands
DNA polymerase 3
________ DNA is inherited from the mother
mitochondrial
__________ occurs when one gene has multiple phenotypic effects
pleiotropy
in _________ one of the X chromosomes becomes inactivated
X inactivation
in __________ a gene on one chromosome is silenced
genomic imprinting
a ___________ is a protein responsible for the first level of DNA packing in chromatin
histone
a __________ is a family tree that shows the history of a particular trait
pedigree
a genes location on a chromosome is called its ______________
locus
in eukaryotic cells transcription occurs in the ___________
nucleus
a __________ mutation results in an amino acid change
missense
a __________ mutation results in a premature stop codon
nonsense
translation occurs on the __________
ribosome
tRNA contains a ________ the recognizes the codon in the A-site
anticodon
in ____________ homologous chromosomes or sister chromatids fail to separate resulting in gametes with an abnormal number of chromosomes
non-disjunction
proteins that are going to secrete out of the cell are translated on ribosomes that bind to the ___________
endoplasmic reticulum
heterozygotes for an allele showing complete dominance are also called ____________
carriers
_______ is the phenotype most commonly seen in a population
wild type
the genetic code is ________, but not ambiguous
redundant
________ unwinds parental double helix at replication forks
helicase
_________ is an abnormal number of chromosomes
aneploidy
________ characters vary along a continuum
quantitative
________ synthesizes RNA primers for the leading and lagging strands
primase
