fertilisation

Question 1

name the 4 major events of fertilisation

Answer 1

1 - contact & recog. bw species & sperm (species spec.)
2- regulation of sperm entry into egg
3- fusion of genetic material
4- activation of egg metabolism to initiate dvpmt

Question 2

name 3 problems assoc. w fertilisation

Answer 2

• how do species find each other ?
• how do sex cells fuse with others in species specific manner?
• how is no. of cells fusing restricted ? polyspermy

Question 3

define gametes

Answer 3

provide genetic material from both f & m to make new and different individual ; f = egg/oocyte – m = sperm

Question 4

what is gametogenesis ?

Answer 4

idk - prod. of gametes initiated in embryo

Question 5

describe sperm structure and motility

Answer 5

motile haploid nucleus w little cytoplasm - needs to bring m genetic material to egg

egg - lots of cytoplasm filled with key comp. of like metaaboliism and proceed w metabolism for long jourmey

Question 6

name structures of sperm

Question 7

name structures of egg

Question 8

define oogenisis

Question 9

desccribe oocyte

Question 10

2 mmore knowlege

Question 11

attraction and actiavtion /seaurchin