In epigenetic inheritance ________.

both homologous chromosomes are inactivated
one set of the homologous chromosomes is silenced
one allele of a homologous pair is expressed
None of the choices are correct.


one allele of a homologous pair is expressed

Anatomy & Physiology

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Bundles of axons in the central nervous system are known as

A) tracts. B) ganglia. C) nuclei. D) horns. E) commissures.

Anatomy & Physiology

A _______________ is a type of knot used to make certain an animal doesn't easily become untied

Fill in the blank(s) with correct word

Anatomy & Physiology

What is the anatomical term for the "pacemaker" of the heart?

A) Terminal branch B) Bundle branch C) AV node D) SA node

Anatomy & Physiology

Which of the following muscles of the head elevates and protrudes the lower lip, as in pouting?

A) occipitofrontalis B) levator palpebrae superioris C) procerus D) mentalis

Anatomy & Physiology