fertilisation + viruses Flashcards
(5 cards)
1
Q
formation of zygote
A
Ovulation releases a secondary oocyte, which is arrested in metaphase II.
If a sperm penetrates the secondary oocyte:
It triggers completion of meiosis II.
This produces:
One small polar body (which degenerates),
And one large cell — the ovum (the mature egg).
The nucleus of the ovum then fuses with the sperm nucleus, forming a zygote.
2
Q
Lambda DNA virus
A
complex protein capsid- non-eveloped
3
Q
HIV
A
RNA retrovirus enveloped
4
Q
Ebola
A
RNA enveloped
5
Q
TMV
A
RNA non-enveloped
