A region of the canary forebrain shrinks during the nonbreeding season and enlarges when breeding season begins. This change is probably associated with the annual _______. A) addition of new syllables to a canary's song repertoire
B) crystallization of subsong into adult songs
C) renewal of mating and nest-building behaviors
D) elimination of the memorized template for songs sung the previous year

Question

23-08-2022
Biology

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A region of the canary forebrain shrinks during the nonbreeding season and enlarges when breeding season begins. This change is probably associated with the annual _______. A) addition of new syllables to a canary's song repertoire
B) crystallization of subsong into adult songs
C) renewal of mating and nest-building behaviors
D) elimination of the memorized template for songs sung the previous year

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tutorconsortium204 tutorconsortium204 · Answer 1 · 2022-08-25T15:11:05+02:00

A region of the canary forebrain shrinks during the nonbreeding season and enlarges when breeding season begins. This change is probably associated with the annual A) addition of new syllables to a canary's song repertoire

what is canary forebrain?

The connection of neurons born in adult canary forebrain was determined using thymidine autoradiography and retrograde transfer of horseradish peroxidase (HRP).

Neurons in a forebrain nucleus, hyperstriatium ventralis, pars caudalis (HVc), were tagged 30 or 60 days later by retrograde transfer of HRP injected into the only two nuclei known to receive a projection from HVc: robustus archistriatalis (RA) and area X of lobus parolfactorius.

Thymidine tagged more than 9% of all neurons in HVc.

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