Genetics Practice Test Worksheets Page 7
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3419.
The colors and scents of plants attract
21.
Which technique could be used to determine
helpful insects and repel insects that feed on
the relative number of bases in fragments
them. The production of the proteins that
taken from a sample of DNA?
provide these colors and scents is the direct
result of the
(1) electrophoresis
(2) cloning
(1) behavior learned from parent plants
(3) paper chromatography
(2) presence of speci c genes
(4) light microscopy
(3) the genetic makeup of the surrounding
vegetation
(4) inability of plants to move as animals
do
22. When the bacterium Serratia marcescens
is grown on a sterile culture medium in a
petri dish at 30 C, the bacterial colonies are
cream colored. When this same bacterium
20. Which organism would most likely have new
is cultured under identical conditions, except
gene combinations?
at a temperature of 25 C, the colonies are
brick red. This di erence in color is most
likely due to the
(1) a frog that was produced from a skin
cell of a frog
(1) type of nutrients in the culture medium
(2) a hamster resulting from sexual
reproduction
(2) sterilization of the culture medium
(3) a bacterium resulting from asexual
(3) e ect of temperature on the expression
reproduction
of the gene for color
(4) a star sh that grew from part of a
(4) e ect of colony size on the synthesis of
star sh
color pigments
page 7
GENETICS UNIT PRACTICE TEST
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