45. Point mutations fall into two general categories: a) depurination / deamination b) radiation / chemical c) base-pair
Posted: Wed May 18, 2022 3:20 pm
45. Point mutations fall into two general categories: a)
depurination / deamination b) radiation / chemical c) base-pair
substitution / base-pair insertions or deletions d) ionizing
mutations / non-ionizing mutations
46. Base-pair insertions or deletions, if one or more base pairs
are added or deleted leads to a) frameshift mutation b) purination
mutation c) amination mutation d) ionizing mutation
47. Most present day geneticists believe that variation among
organisms resulted from random mutations that sometimes happen to
be adaptive a) true b) false
48. Non Ionizing radiation does not induce mutations except for
a) ultrasound b) microwave c) fluorescent light d) ultraviolet
light
49. This is an invisible, inert radioactive gas with no smell or
taste; it is the second most frequent cause of lung cancer after
cigarette smoking a) carbon dioxide b) helium c) radon d) zenon
50. Experiments that are done to gain understanding of
fundamental phenomena, best describes a) the scientific method. b)
applied research c) open experiments. d) basic research
51. During G2 (gap 2) of Interphase: a) the cell membrane
pinches off to form two daughter cells b) the cell grows slightly
and prepares for nuclear division c) the cell doubles in size and
prepares for cytokinesis d) the cell prepares for chromosome (DNA)
replication
52. Synapses and crossing-over takes place in a) prophase I of
meiosis I b) prophase II of meiosis II c) both prophase I and
prophase II d) anaphase I of meiosis I
depurination / deamination b) radiation / chemical c) base-pair
substitution / base-pair insertions or deletions d) ionizing
mutations / non-ionizing mutations
46. Base-pair insertions or deletions, if one or more base pairs
are added or deleted leads to a) frameshift mutation b) purination
mutation c) amination mutation d) ionizing mutation
47. Most present day geneticists believe that variation among
organisms resulted from random mutations that sometimes happen to
be adaptive a) true b) false
48. Non Ionizing radiation does not induce mutations except for
a) ultrasound b) microwave c) fluorescent light d) ultraviolet
light
49. This is an invisible, inert radioactive gas with no smell or
taste; it is the second most frequent cause of lung cancer after
cigarette smoking a) carbon dioxide b) helium c) radon d) zenon
50. Experiments that are done to gain understanding of
fundamental phenomena, best describes a) the scientific method. b)
applied research c) open experiments. d) basic research
51. During G2 (gap 2) of Interphase: a) the cell membrane
pinches off to form two daughter cells b) the cell grows slightly
and prepares for nuclear division c) the cell doubles in size and
prepares for cytokinesis d) the cell prepares for chromosome (DNA)
replication
52. Synapses and crossing-over takes place in a) prophase I of
meiosis I b) prophase II of meiosis II c) both prophase I and
prophase II d) anaphase I of meiosis I