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Reproductive Biology
Lecture 13
13
Biology
Undergraduate 2
11/30/2006

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Term
Whether an animal reproduces continuously or seasonally depends on what?
Definition
the environment
Term
what are the three types of seasonal reproduction patterns?
Definition
annual
biennial
opportunistic
Term
how often do annual organisms mate?
Definition
once a year
Term
how often do biennial organisms mate?
Definition
once every two years
Term
how often do opportunistic organisms mate?
Definition
unpredictable - can be linked to the environment
Term
what does the pineal gland do?
Definition
synthesizes melatonin which is produced during the dark phase
Term
what is melatonin?
Definition
the "chemical expression of darkness"
Term
what is melatonin?
Definition
the "chemical expression of darkness"
Term
what is melatonin?
Definition
the "chemical expression of darkness"
Term
what are the three types of gonadal and mating classifications?
Definition
constant
associated cycle
disassociated cycle
Term
what is a constant gonadal classification?
Definition
gonads are always maximally active
Term
what is an associated cycle gonadal classification?
Definition
gonadal activity and mating behavior occur at the same time and mating occurs when gonads are largest
Term
what is a disassociated cycle gonadal classifaction?
Definition
mating occurs when gonads are inactive
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