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HOW does REPRODUCTION ENSURE the CONTINUITY of a SPECIES? - Coggle Diagram
HOW does REPRODUCTION ENSURE the CONTINUITY of a SPECIES?
External and internal
insert table
Spores
Fungi
Budding
Fungi
yeast
small outgrowth = develop
enlarges
nucleus divide one copy move > bud
daughter cell = certain size
detaches from parent and grow itself
Protists
adult develops small bud
separate from parent = new individual
ADVANTAGE
no enviro variation
offspring always adapted to enviro
DIS
change enviro = rapid decline
Continuity of a species
success of species/latter generations
survival of species over generations
Sexual reproduction
meeting of gametes
ADVANTAGES
genetic diversity
offspring
possess random variations
Adaptations and VASRP
Evolved to ensure species continuity
# strategies to ^ effective reproduction
type of fertilisation
timing of gametes release
where young develop
parental care
gametes produced
DISADVANTAGES
process = time and energy expenditure
Asexual reproduction
single organism = new identical one
one parent, offspring 100% identical
adv = parent and young genetic identical
Fragmentation
special structure
Binary Fission
bacteria
prokaryote grow full adult size
replicate single DNA molecule
each copy attach opp. ends membrane
proteins accumulate at ends cell
pinch off cytoplasm
new cell wall in cleavage
protists
parent cell = splitting in two
result in two identical daughter cells
cell grow 2x it size
replicates its genetic material
enables rapid population growth
short period of time
no genetic diversity