Crierie, A & Greig, D 1999, Biology sace 2 student workbook : essentials, p.83, Adelaide Tuition Centre, Adelaide.
Monday, October 02, 2006
Rooster's comb
"The comb on the head of a rooster is a secondary sexual characteristic. Its development is under the control of hormones secreted from the testes. In a rooster which has been castrated the comb is small and underdeveloped. If the same castrated rooster has the testes implanted back into the body but in a different different region e.g. the abdominal cavity, the comb still develops normally."
Crierie, A & Greig, D 1999, Biology sace 2 student workbook : essentials, p.83, Adelaide Tuition Centre, Adelaide.
Crierie, A & Greig, D 1999, Biology sace 2 student workbook : essentials, p.83, Adelaide Tuition Centre, Adelaide.
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4 comments:
wa lau...short and precise. And the best thing is that readers will get what u're trying to say at the same time. practical practical..
syyeam, dont try to side him
sze ching, juz wait...
u'll get it from me at the moment u expect it the least.
Bring it on, rooster
haha..interesting. i shall wait and c!
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