Course

Genetics

Study Pack

Set 1 The Biology And Genetics Of Cells And Organisms

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Question 1

(Multiple Choice)

Free
expression of a given gene may be influenced by

A)Activating transcription factors
B)Enhancer sequences
C)Histone modifications
D)Changes in chromatin structure
E)All of the above

Answer

Question 2

(Multiple Choice)

Free
Which of the following types of changes would most likely NOT be associated with increased cancer risk?

A)A mutation resulting in higher levels of K-Ras expression
B)Reduced expression of HOTAIR lncRNA
C)Loss of function of the Dicer enzyme
D)A mutation in K-Ras that prevents recognition by Let-7
E)None of the above

Answer

Question 3

(Multiple Choice)

Free
Which of the following is true of orthologous genes?

A)They are genes in different species that evolved from a common ancestor.
B)They code for proteins having different functions.
C)They are genes located on the same chromosome.
D)They are related genes within the same species.
E)All of the above.

Answer