GENETIC DIVERSITY & NATURAL SELECTION:A-LEVEL.Help understanding directional & stabilising selection

Поділитися
Вставка
  • Опубліковано 14 чер 2024
  • Learn the definition of genetic diversity, evolution and the process of natural selection. I then apply this information to two graphs to demonstrate direction selection and stabilising selection.
    Download my FREE GUIDE - How to analyse your tests to skyrocket your grade! missestruchbiology.mykajabi.c...
    **JOIN MY BIOLOGY CLUB***. Need an A/A in Biology and get bored easily and procrastinate??? Join my Biology Study Club for resources, support and a social community to get you to that A*! missestruchbiology.mykajabi.c...
    Try my resources to improve your skills and grades:
    1) Try my FREE resources www.missestruch.co.uk/freebies
    2) THE COMPLETE A-LEVEL BUNDLE www.missestruch.co.uk/offers/...
    2)FULL A-LEVEL ACTIVE RECALL WORKBOOK
    www.missestruch.co.uk/offers/...
    3) A-LEVEL NOTES
    www.missestruch.co.uk/offers/...
    → For more revision videos, try watching my ENTIRE topic videos:
    • A level Entire Topic V...
    ___________________________________________________
    --A-level--
    * AQA A-level Biology textbook (this is what I use at my school)- OUP amzn.to/2MWiFvY
    * CGP revision guide amzn.to/36B26h7
    * CGP workbook amzn.to/39A55YZ
    * Maths skills for A-level Biology amzn.to/37GaHPI
    * Synoptic essay book amzn.to/2ukHQ4Y
    * AQA A-level biology practical skills guide amzn.to/2FkUSSn
    * A-level Year 1 workbook amzn.to/36s8EhE
    * A-level Year 2 workbook amzn.to/2QqpmIY
    --Gear to create videos on my blog:--
    * Apple Ipad 8th Generation amzn.to/3nEJPqL
    * Apple iPad Pen amzn.to/3q8dEBI
    * Microphone amzn.to/3oGuVSd
    * Go Pro Hero 7 for all practical video footage and time-lapses amzn.to/2tzwg5m
    * Reflectors amzn.to/2TRW61H
    * Surface Pro Laptop amzn.to/37zND4U
    * Toshiba 1TB external portable hard drive amzn.to/36qPkBt
    Music: Soho - Riot • Soho - Riot (No Copyri...
    DISCLAIMER: Links included in this description might be affiliate links. If you purchase a product I may receive a small commission. There is no additional charge to you!
    Image credits
    commons.wikimedia.org/wiki/Fi...
    commons.wikimedia.org/wiki/Fi...
    en.m.wikipedia.org/wiki/File:...

КОМЕНТАРІ • 32

  • @faithpraise9883
    @faithpraise9883 2 роки тому +27

    You make biology interesting to learn. I am soo surprise how many people don't know your channel yet

  • @ethancheung114
    @ethancheung114 2 місяці тому +1

    When the teacher powerpoint is a slide with just the graphs --> saves my life yet again.

  • @Klaud_
    @Klaud_ 3 роки тому +9

    You're the Biology teacher we all need -_-

  • @nickynwalema9618
    @nickynwalema9618 4 роки тому +6

    loved this! Thank you

  • @crazyking_sigma
    @crazyking_sigma 10 місяців тому +2

    Hi, thanks for this video it was really helpful. I just had a question, are the curves for the selection diagrams normally distributed, so are their means=mode=median. If so in an exam question would it be acceptable to use the terms mean, median and mode interchangeably when describing the change in position or shape of the curve, due to the symmetrical nature of the normal distribution's curve?
    Thank you 👍.

  • @angelinanguyen7040
    @angelinanguyen7040 3 роки тому +4

    Thank you so much!

  • @dinahsmandell3502
    @dinahsmandell3502 3 роки тому +5

    thank you :)

  • @wa4731
    @wa4731 2 роки тому +5

    Thank you for the video! What about disruptive selection?

    • @MissEstruchBiology
      @MissEstruchBiology  2 роки тому +1

      Hello,
      That comes up in topic 4 when speciation is taught. I have a video on that under speciation.

    • @wa4731
      @wa4731 2 роки тому

      @@MissEstruchBiology OK, thank you. 😊

  • @alizazulfiquar8999
    @alizazulfiquar8999 2 роки тому +4

    Thank you so much for this video! I wanted to ask if there is any topics this links with?

  • @Rtfsilky
    @Rtfsilky 2 роки тому +2

    Thank you Miss

  • @joannadaniel9396
    @joannadaniel9396 Рік тому +1

    thank you

  • @jason-lg3pj
    @jason-lg3pj Рік тому

    Hi, When we say random mutations, are we talking about substitution, deletion etc? Or is it about chromosomal mutations. Could you explain that further please. Many thanks 😊 3:15

    • @MissEstruchBiology
      @MissEstruchBiology  Рік тому

      Hey, we are referring to gene mutations that result in new alleles.

  • @uwotm8770
    @uwotm8770 3 роки тому +4

    hi miss thank you for the video, i have a question: what is allele frequency? (how would you define it?)

    • @MissEstruchBiology
      @MissEstruchBiology  3 роки тому +3

      Hello,
      that is the proportion of each allele within a gene pool.
      :)

    • @davidmkwizu76
      @davidmkwizu76 2 роки тому

      I thought it was how often an allele appears in the population.

  • @skyeforster2580
    @skyeforster2580 2 роки тому +1

    Hello, Would it be possible to explain the difference between interbreeding and Inbreeding because it has got my head baffled?_

    • @EternalShadow1667
      @EternalShadow1667 2 роки тому +1

      Inbreeding: breeding within closely genetically related individuals of the same species.
      Interbreeding: breeding between variants of the same species. I.e, a horse breeding with a donkey to produce a mule.

  • @annamahmed6502
    @annamahmed6502 Рік тому

    for the essay, is independent segregation important for this reason? genetic variation within the chromosomes leading to natural selection?

  • @Wojbes
    @Wojbes 19 днів тому

    8:20 what are we in America