4.1 Gamete Formation BIOLOGY FORM 4

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CHAPTER 4:

REPRODUCTION AND GROWTH

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BY MISS SITI SOFEA MD


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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


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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

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SEUA5 REPRODUCTION INHUMAN

GAMETE FORMATION

FERTI5I6ATION

DE7E5OPMENT OF 6YGOTE

IMP5ANTATION

DE7E5OPMENT OF FOETUS

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4.1 GAMETE

FORMATION

CHAPTER 4: REPRODUCTION AND GROWTH

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GAMETE FORMATION

For%#*$o o)sper%s

The formation of reproductive cells

(gametes)

For%#*$o o) o0#

SPERMATOGENESIS OOGENESIS


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HUMAN GAMETEMA5E FEMA5EGAMETE

REPRODUCTI7E CE55SPERM O7UM

GONADREPRODUCTI7E

ORGAN

TESTIS O7ARY


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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 ./


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?

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$+ Coec*s (*er(s *o 0#"$#


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Process o) o0(% )or%#*$o

Occ(r $s$'e o0#r-

S*#r*s '(r$" *he )oe*#, 'e0e,op%e*

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4.1 Gamete Formation BIOLOGY FORM 4