1. Which of the following ensures that most genes on one X chromosome are not expressed in female animal cells? a.Knockout b.Circadian rhythm c.Repressors d,X chromosome inactivation 2. Which of the following is a function of histones in the process of gene expression? a.They wrap or unwind DNA and affect which DNA regions are accessible to RNA polymerase. b.They transport mRNA to key regions in the cytoplasm. c.They bind to DNA to increase or decrease transcription. d.They modify newly transcribed mRNA sequences.

1. Which of the following ensures that most genes on one X chromosome are not expressed in female animal cells? a.Knockout b.Circadian rhythm c.Repressors d,X chromosome inactivation 2. Which of the following is a function of histones in the process of gene expression? a.They wrap or unwind DNA and affect which DNA regions are accessible to RNA polymerase. b.They transport mRNA to key regions in the cytoplasm. c.They bind to DNA to increase or decrease transcription. d.They modify newly transcribed mRNA sequences.

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Description: 1. Which of the following ensures that most genes on one X chromosome are not expressed in female animal cells? a.Knockoutb.Circadian rhythmc.Repressorsd,X chromosome inactivation 2. Which of the following is a function of histones in the process of

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter19: Genomes And Proteomes

Section: Chapter Questions

Problem 10TYK: When two protein-coding genes have very similar nucleotide sequences and are located right next to...

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Concept explainers

Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.

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Question

1. Which of the following ensures that most genes on one X chromosome are not expressed in female animal cells?

a.Knockout

b.Circadian rhythm

c.Repressors

d,X chromosome inactivation

2. Which of the following is a function of histones in the process of gene expression?

a.They wrap or unwind DNA and affect which DNA regions are accessible to RNA polymerase.

b.They transport mRNA to key regions in the cytoplasm.

c.They bind to DNA to increase or decrease transcription.

d.They modify newly transcribed mRNA sequences.

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