natural selection Watch

ellatolfrey
Badges: 0
Rep:
?
#1
Report Thread starter 2 years ago
#1
could someone please explain darwin's theory of natural selection? biology gcse tomorrow and i still don't under stand
0
reply
Kk1999
Badges: 2
Rep:
?
#2
Report 2 years ago
#2
(Original post by ellatolfrey)
could someone please explain darwin's theory of natural selection? biology gcse tomorrow and i still don't under stand
I had studied these notes for my GCSEs

you too might find this useful:
http://www.sparknotes.com/biology/ev...n/summary.html

I had also seen a video.Cannot find it now but I noted down the Summary:
1)All organisms produce a abundance of offspring,more than necessary.
2)There is fairly a constant population over time for any particular organism.
3)Within species, there is a wide range of features due to different alleles.
4)Variations are passed on and are inherited by offspring.

PM me if still doubts are there...
0
reply
2-99
Badges: 14
Rep:
?
#3
Report 2 years ago
#3
If a member of the species has a characteristic which aids survival (due to a mutated gene), it is 'naturally selected' to pass on this useful characteristic to its offspring, because it survives to breeding age. While others without this characteristic will die before breeding age, so eventually the entire population will have this this characteristic (which is adaptive to the environment they live in).

Hope this also helps! 😃
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
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

University open days

  • Cardiff University
    Undergraduate Open Day Undergraduate
    Wed, 27 Mar '19
  • University of Portsmouth
    Postgraduate and Part-Time Open Evenings Postgraduate
    Wed, 27 Mar '19
  • Middlesex University London
    Postgraduate Open Evening Postgraduate
    Wed, 27 Mar '19

Where do you need more help?

Which Uni should I go to? (166)
18.55%
How successful will I become if I take my planned subjects? (91)
10.17%
How happy will I be if I take this career? (148)
16.54%
How do I achieve my dream Uni placement? (131)
14.64%
What should I study to achieve my dream career? (85)
9.5%
How can I be the best version of myself? (274)
30.61%

Watched Threads

View All