The immatured stage eggs are called as
Microlecithal
Oogenesis
Oocyte
Zygote
It's Obvious
In human females, meiosis-$II$ is not completed until
Ejaculation of human male contains about $200 -300$ million sperms, of which for normal fertility ____ $\%$ sperms must have normal shape and size and at least ____$\%$ must show energetic motility.
$A$ : Middle piece of sperm is called powerhouse. $R$ : It contains mitochondria.
Meiotic division during oogenesis is different from that in spermatogenesis. Explain how and why ?
In humans, at the end of the first meiotic division, the male germ cells differentiate into the
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