30) Unit 2 - Asexual and Sexual Reproduction Flashcards Preview

CFE - Advanced Higher Biology > 30) Unit 2 - Asexual and Sexual Reproduction > Flashcards

Flashcards in 30) Unit 2 - Asexual and Sexual Reproduction Deck (7)
Loading flashcards...
1
Q

Name an advantage and 2 disadvantages of sexual reproduction

A

ADV:
•Greater genetic variation - produces organisms with the ability to adapt to changing environments or survive new strains of disease

DISAD:
•slow reproduction rate - only half the population can produce offsprings

•only half of the parents genome is passed to offspring so disruption of a successesful parental genome

2
Q

name 3 advantages and 1 disadvantage of asexual reproduction

A

ADV:
•metabolic cost is low
•fast reproduction rate - all members of population can reproduce
•successful reproductive strategy in narrow niches or when recolonizing a disturbed environment

DISAD:
•lack of genetic diversity - can only survive in narrow stable environments with narrow types of parasites

3
Q

Name the types of asexual reproduction in eukaryotes

A
  • Vegetative cloning (plants)

* Parthenogenesis (animals)

4
Q

Describe types of vegetative cloning

A
  • Bulbs - onions and garlic
  • Runners - Strawberry plants
  • Fungi and non flowering plants use asexually produced spores for dispersal to colonise new environments
5
Q

Describe what parthenogenesis

A

•Where an offspring is produced asexually without the need for the fertilization of the egg

6
Q

What types of conditions are needed for parthenogenesis

A
  • cold climates

* low parasite density and diversity

7
Q

how do prokaryotes do asexual reproduction

what additional mechanism will these organisms use

A
  • Prokaryotes (bacteria & archea) use asexual reproduction for their main reproduction - simply divide
  • These organisms will commonly have horizontal gene transfer mechanisms

Decks in CFE - Advanced Higher Biology Class (38):