4.1 gamete formation biology form 4
TRANSCRIPT
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
1/33
CHAPTER 4:
REPRODUCTION AND GROWTH
1
BY MISS SITI SOFEA MD
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
2/33
INTRODUCTION:REPRODUCTION
The process e! or"#$s%s &e$"pro'(ce' )ro% *he e+$s*$" oes
A,, or"#$s%s c#rr- o(* repro'(c*$o *o:
.#/ es(re *he co*$($*- o) ,$)e
.&/ coser0e *he co*$($*- o) $*s o!spec$es
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
3/33
TYPES OF REPRODUCTION
ASEXUAL REPRODUCTION SEXUAL REPRODUCTION
I0o,0es 1 p#re* I0o,0es p#re*s )ro% *hes#%e spec$es !$*h '$2ere*se+es
Does o* $0o,0e "#%e*e Bo*h p#re*s pro'(ce"#%e*es )or )er*$,$s#*$o
O2spr$" pro'(ce' #re"ee*$c#,,- $'e*$c#, *o *hep#re*
O2spr$" pro'(ce' #re'$2ere* )ro% *he p#re*s
3
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
4/33
SEUA5 REPRODUCTION INHUMAN
GAMETE FORMATION
FERTI5I6ATION
DE7E5OPMENT OF 6YGOTE
IMP5ANTATION
DE7E5OPMENT OF FOETUS
4
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
5/33
4.1 GAMETE
FORMATION
CHAPTER 4: REPRODUCTION AND GROWTH
8
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
6/33
GAMETE FORMATION
For%#*$o o)sper%s
The formation of reproductive cells
(gametes)
For%#*$o o) o0#
SPERMATOGENESIS OOGENESIS
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
7/33
9
HUMAN GAMETEMA5E FEMA5EGAMETE
REPRODUCTI7E CE55SPERM O7UM
GONADREPRODUCTI7E
ORGAN
TESTIS O7ARY
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
8/33
Progeny: I* $cre#ses *he (%&er o) o2spr$"*hro("h )er*$,$;#*$o
Variaion: I* res(,*s $ "ee*$c 0#r$#*$o $ *heo2spr$"
T!e "i#$oi" %ae o& an organi%': I*%#$*#$s *he '$p,o$' (%&er o) ;-"o*e ./ )ro%
oe "eer#*$o *o #o*her &- )(s$" oe %#,e"#%e*e ./ !$*h oe )e%#,e "#%e*e ./
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
20/33
?
Sr+-+
re
F+n-ion
O0#r- Pro'(ces o0# .e""s/ #' )e%#,e se+
hor%oes .oes*ro"e #' pro"es*eroe/
F#,,op$#*(&e
P,#ce Fer*$,$;#*$o occ(r .# o0(% )(ses!$*h # sper% *o )or% # ;-"o*e/
U*er(s P,#ce The e%&r-o $%p,#*e' #' )oe*(s
'e0e,ops *hro("ho(* pre"#c-
7#"$# Rece$0e sper%s )ro% pe$s #' ch#e,s*he sper%s *o!#r' )#,,op$# *(&es
Cer0$+ Coec*s (*er(s *o 0#"$#
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
21/33
1
-
7/26/2019 4.1 Gamete Formation BIOLOGY FORM 4
22/33
Process o) o0(% )or%#*$o
Occ(r $s$'e o0#r-
S*#r*s '(r$" *he )oe*#, 'e0e,op%e*