REPRODUCTION

emptyastea
Mind Map by emptyastea, updated more than 1 year ago
emptyastea
Created by emptyastea over 6 years ago
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Description

Asexual sexual
Tags

Resource summary

REPRODUCTION
1 Asexual
1.1 creation of new individual without fusion of gametes
1.2 no production of gametes except parthenogenesis

Annotations:

  • only eggs
1.3 rely on mitotic division
1.4 all genes come from 1 parent
1.5 rapidly produce offspring
1.5.1 genetically identical unless mutation
1.6 vegetative propagation (plant)
1.6.1 stolon
1.6.1.1 horizontal stem on ground
1.6.1.2 can produce new clone from buds at intervals
1.6.1.3 strawberry
1.6.2 bulb
1.6.2.1 short underground stem to which overlapping
1.6.2.2 onion
1.6.3 rhizome
1.6.3.1 horizontal underground stem
1.6.3.2 ginger
1.6.3.3 new aerial shoot arise from axillary buds on the rhizome
1.6.4 tuber
1.6.4.1 swollen underground stem store food
1.6.4.1.1 root
1.6.4.1.2 stem
1.6.4.2 potato
1.6.5 corm
1.6.5.1 very short & erect underground stem
1.6.5.2 water chestnut
1.6.6 leaf
1.6.6.1 leaf margin produce plantlets
1.6.6.2 bryophyllum
1.6.7 sucker
1.6.7.1 root produce new plant
1.6.7.2 banana
1.7 in animal
1.7.1 parthenogenesis(virgin birth)
1.7.1.1 egg develop into young without fertelised
1.7.1.2 komodo dragon
1.7.1.3 aphids

Annotations:

  • use when food is ample to exploit the food
1.7.2 budding
1.7.2.1 formation bud fom parent cell
1.7.2.2 grows, detaches & germinates
1.7.2.3 yeast
1.7.3 binary fission
1.7.3.1 unicellular divides into 2
1.7.3.2 receive DNA, ribosomes & cytoplasm
1.7.3.3 amoeba
1.7.4 regeneration
1.7.4.1 parent body breaks, each grow into organism
1.7.4.2 starfish
2 sexual
2.1 fusion of sperm & oocytes
2.2 genetically different
2.3 trasnfer RNA & DNA to progeny
2.4 involves gametogenesis & feterlization

Annotations:

  • gametogenesis= formation of gametes
2.4.1 internal
2.4.1.1 copulation

Annotations:

  • male delivers sperm directly into female
2.4.1.2 fusion inside
2.4.1.3 terrestrial org
2.4.1.4 devp. of embryos
2.4.1.4.1 oviparity
2.4.1.4.1.1 fertelize-inside, devp.-outside
2.4.1.4.1.2 animal lays eggs
2.4.1.4.1.3 chicken
2.4.1.4.2 viviparty
2.4.1.4.2.1 devp. occur inside
2.4.1.4.2.2 gain nutrient directly from mother
2.4.1.4.2.3 retained in uterus for a period
2.4.1.4.2.4 tiger
2.4.1.4.3 ovoviparity
2.4.1.4.3.1 devp. inside shelled eggs in mother's body
2.4.1.4.3.2 matured, hatched & released
2.4.1.4.3.3 embryo obtain nutrient (eggyolk)
2.4.1.4.3.4 shark
2.4.2 external
2.4.2.1 aquatic org

Annotations:

  • frog fish
2.4.2.2 fusion outside body
2.4.2.3 mating partners release gamete simultaneously
2.4.2.4 short lifetime/many released
2.5 permit recombination of DNA (adv)
2.6 enhances survival
3 new species formed & genetic material are passed down to next generation
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