How many days does is used for incubation of an... - JAMB Biology 2018 Question
How many days does is used for incubation of an egg to release chick
A
21
B
22
C
20
D
23
correct option: a
On the 21st day of incubation the chick finishes its escape from the shell. The initial break in the shell is made by the egg tooth. This is referred to as external pipping
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