Question

How are ova classified in terms of yolk content?

Options

• Telolecithal – yolk concentrated at one pole

• Polylecithal – abundant yolk distributed throughout

• Alecithal – almost devoid of yolk, as seen in mammals

• Centrolecithal – yolk concentrated in the center

Answer 1

Ova in mammals, including humans, are classified as alecithal because they are almost devoid of yolk. This is in contrast to avian or fish eggs which are highly yolky.