Question 25
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Identify the choice that best completes...
Question 25
Not yet answered
Points out of 1.00
Identify the choice that best completes the statement or answers the question.
A scientist hypothesizes that the markings in a certain species of frog can be altered by epigenetic mechanisms. Which of
these observations would provide the strongest evidence for this hypothesis?
0
a.
Two frogs that are closely related, but not genetically identical, have exactly the same markings.
b.
RNA polymerases bind to a region near the genes that control certain markings.
C
Some markings are controlled by sex-linked recessive genes.
10
d.
Genetically identical frogs develop different markings when placed in different environments.
a
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Question 26
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Answers: 1
Biology, 22.06.2019 04:30
Pls quickly! which of the following is true about the behavior of an organism? a. the behavior of an organism is influenced by both its heredity and it’s environment. b. the behavior of an organism is influenced only by the treats it inherits from its parents. c. the behavior of an organism is influenced only by the environment in which it lives in. d. the behavior of an organism is not influenced by either it’s heredity or its environment.
Answers: 2
Biology, 22.06.2019 10:00
Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
Answers: 2
Biology, 22.06.2019 10:30
Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.
Answers: 3
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