Epigenetic Factors – Chromosome Theory and Sex Linkage
About the Lecture
The lecture Epigenetic Factors – Chromosome Theory and Sex Linkage by Georgina Cornwall, PhD is from the course Understanding Genetics.
Included Quiz Questions
Which of the following is true of heterochromatin and euchromatin?
- Heterochromatin is not available to be transcribed, whereas euchromatin is available to be transcribed.
- Euchromatin is not available to be transcribed, whereas heterochromatin is available to be transcribed.
- Euchromatin is tightly wound around histones, whereas heterochromatin is not.
- Heterochromatin is a term used for alternate copies of an allele, whereas euchromatin refers to two of the same copies of an allele.
- Both heterochromatin and euchromatin cannot be epigenetically modified.
Which of the following is true of DNA methylation? Select all that apply.
- It involves the addition of methyl groups to DNA strands.
- It changes DNA activity without any changes in the DNA sequence.
- It represses gene transcription.
- It helps transcription factors recognize the gene to be expressed.
- It participates in DNA replication.
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Author of lecture Epigenetic Factors – Chromosome Theory and Sex Linkage
Georgina Cornwall, PhD
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