Genetics Practice Test Worksheets Page 12
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3430. The letters in the accompanying diagram
31.
To determine the identity of their biological
represent genes on a particular chromosome.
parents, adopted children sometimes request
DNA tests. These tests involve comparing
DNA samples from the child to DNA
samples taken from the likely parents.
Possible relationships may be determined
from these tests because the
(1) base sequence of the father determines
the base sequence of the o spring
(2) DNA of parents and their o spring
is more similar than the DNA of
nonfamily members
Gene B contains the code for an enzyme
that cannot be synthesized unless gene A is
(3) position of the genes on each
also active. Which statement best explains
chromosome is unique to each family
why this can occur?
(4) mutation rate is the same in closely
related individuals
(1) A hereditary trait can be determined by
more than one gene.
(2) Genes are made up of double-stranded
segments of DNA.
(3) All the genes on a chromosome act to
produce a single trait.
(4) The rst gene on each chromosome
controls all the other genes on the
chromosome.
page 12
GENETICS UNIT PRACTICE TEST
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