Created at 1:30 a.m. May, 05, 2026
Author:
enirenberg
Co-authors:
zarathustra
Type of change:
Updated content
Rationale for change
DNA methylation is established in gametes before fertilization.
Multiple other mechanisms of imprinting occur in development as well, such as modifications to histones, use of noncoding RNAs, etc. As written, the question implies both that methylation occurs during embryogenesis and that it is the sole means of imprinting.
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- These genes are imprinted either in a maternal fashion (paternal allele is expressed while maternal is silenced), or paternal fashion (maternal allele is expressed while paternal is silenced)

- These genes are NOT x or y linked; this occurs during GAMETOGENESIS

Lecture Notes
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Missed Questions
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Pathoma
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Boards and Beyond
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First Aid
Sketchy



Watch Biochemistry Disorders of Imprinting (Prader Willi & Angelman Syndromes)
Watch Pediatric Disorders of Imprinting (Prader-Willi & Angelman Syndromes)



Watch Biochemistry Disorders of Imprinting (Prader Willi & Angelman Syndromes)
Watch Pediatric Disorders of Imprinting (Prader-Willi & Angelman Syndromes)
Sketchy 2
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Sketchy Extra
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Picmonic
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Pixorize
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Physeo
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Bootcamp
Watch associated Bootcamp video - High Yield Genetic Disorders: Disorders of Imprinting
Watch associated Bootcamp video - One-Carbon Metabolism: Uses of One-Carbon Groups
Watch associated Bootcamp video - DNA Structure: DNA Tertiary Structure
Watch associated Bootcamp video - One-Carbon Metabolism: Uses of One-Carbon Groups
Watch associated Bootcamp video - DNA Structure: DNA Tertiary Structure
OME
Additional Resources
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One by one
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