P12: why sexual reproduction ? by shaun kilfoyle https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c en-us 2021-08-10 04:27:52 UTC 2021-08-10 05:51:52 UTC hello@padlet.com Sexual reproduction comes at a considerable cost (e.g. metabolic and energetic) for many aquatic organisms. Despite this, it remains a widespread reproductive method. How do aquatic organisms mitigate such costs? 200250451 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673697357 2021-08-10 04:32:28 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673697357 What are the various aspects that influence the evolution of sexual reproduction in aquatic organisms? 200250451 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673698137 Evolution is the change in inherited characteristics or traits in a population of organisms over many generations.

Sexual selection: Sexual selection, like natural selection, is a little-appreciated but crucial evolutionary mechanism that moves some genes preferentially into the future. Females who chose showy mates have flashy male offspring, who will be more desirable to females in the future as a result of the genes that encourage the desire.

Natural selection: Natural selection is the process through which populations of living organisms adapt and change. Natural selection can lead to speciation, where one species gives rise to a new and distinctly different species.



]]> 2021-08-10 04:33:22 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673698137 Main types of reproduction shaunkilfoyle https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673705456 - Sexual
. A gamete combine with each other and produce a zygote.
. Usually requires 2 parents from the opposite sex.
. diffrent offspring
- Asexual
. Able to produce with one parent 
. no need for sex cells 
. "Clone" 
 ]]> 2021-08-10 04:41:25 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673705456 Place of fertilisation (Sexual) 200200402 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673706382 External:
- Gametes joined outside of body 
- Most aquatic species
Advantages: Parents dont need to be in the same place, more offspring
Disadvantages: Lesser chance of success, may waste gametes

Internal:
- Gametes joined inside of body
- Sebastes sp.
Advantages: Greater chance of success
Disadvantages: Parents must be close together, fewer offspring]]> 2021-08-10 04:42:03 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673706382 Why sexual reproduction considered better shaunkilfoyle https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673707557 - Produces variations 
- Less susceptible to diseases 
- Increase adaptibility 
- Increased rate of survival]]> 2021-08-10 04:43:17 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673707557 Semelparity vs Iteroparity 200250451 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673721065 Semelparity:
Organism dies after spawning (cost) 
Spawn is in larger amounts due to higher amounts of energy used (mitigation)

Iteroparity:
Organism eventually lays less eggs as it grows (cost)
Organism uses less energy and has more chances of spawning (mitigation)]]> 2021-08-10 04:58:23 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673721065 Broadcast spawning 200200402 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673723485 Gametes are shed directly into water
Habitat of larval and juvenile/adult are completely different
No subsequent parental care - low survival rate of offspring
- Oysters, Corals
Advantages: Zero energy expenditure 

]]> 2021-08-10 05:01:20 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673723485 jaeramos02 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673724417 2021-08-10 05:02:33 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673724417 Biological fitness shaunkilfoyle https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673727432 biological fitness is best defined as the ability of an individual to produce offspring that survive and reproduce

- better the biological fitness - improves chances of species survival 

]]> 2021-08-10 05:06:29 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673727432 jaeramos02 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673732273 Peacock with a highly ornamented tail which, like the male quetzal's tail, evolved by female choice. If some “eyes” are removed from his tail, he becomes less attractive to peahens.]]> 2021-08-10 05:12:28 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673732273 jaeramos02 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673743288 2021-08-10 05:26:41 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673743288 jaeramos02 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673746301 2021-08-10 05:30:56 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673746301 200200402 https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673751401 Male guppies have fancy brightly coloured fins to attract a mate. They have a long dorsal fin that has remarkable range of colours, patterns, including orange blue, with spots, stripes etc. 
If they do not possess such appearances, they will be deemed less attractive and will have a harder time finding a mate.]]> 2021-08-10 05:36:43 UTC https://padlet.com/shaunkilfoyle/sdjuya9610u9hk5c/wish/1673751401