jomaa
Badges: 4
Rep:
?
#1
Report Thread starter 3 years ago
#1
species produce more off spring than the environment can sustain. describe how natural selection ensures the most favourable alleles are passed on
0
reply
username3697430
Badges: 16
Rep:
?
#2
Report 3 years ago
#2
Can't see how this is has anything to do with speciation as that is a process where organisms of the same species becomes reproductively isolated and different environments cause the organisms to evolve into an entirely new species.

Regardless the answer to the question; describe how natural selection ensures the most favourable alleles are passed on

Random mutations within the species causes changes to the phenotypes of the organisms the alleles that causes these changes may provide an advantage in survival
A selection pressure is applied which causes organisms who are better adapted to survive.
Organisms that are able to survive have a higher chance of producing offspring - note that there is a trade off i.e an organism needs to be able to survive the selection pressure but equally the organism still needs to attract a mate it is no good being well adapted to survive but not being able to reproduce.
Fertile offspring have a high chance of inheriting these advantage alleles (however do note there is a slim chance that they will not inherit these alleles due to variation)
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

How would you feel if uni students needed to be double vaccinated to start in Autumn?

I'd feel reassured about my own health (21)
15.67%
I'd feel reassured my learning may be less disrupted by isolations/lockdowns (44)
32.84%
I'd feel less anxious about being around large groups (13)
9.7%
I don't mind if others are vaccinated or not (14)
10.45%
I'm concerned it may disadvantage some students (7)
5.22%
I think it's an unfair expectation (32)
23.88%
Something else (tell us in the thread) (3)
2.24%

Watched Threads

View All