These notes helped me get into medical school, I completed my a levels at Guildford high school which consistently ranks among the top schools in the UK and is known for their academic rigour. I made these notes as a summary of the power points that we were taught off of.
Autosomal linkage when 2 in
Dihybrid
aresutetotheenvironmentwireproduct larger
cross 9: 3: 3:
genes are close to each other
TG Tg +G +g
in
linked
will be
phenotypically suited to the environment. When an
TG TTGGTTGg TAGG TAGg disruptive
is suited to an environment it will have a survival
organism
Tg TTGg TTgg TtGg Ttgg advantage and pass on its
genes ,
this leads to directional selection. Mi
sex-linkage gene is on the sex If I traits are both advantageous ,
the population will split, this is
↓ G TAGG TAGg +GG
chromosomes (XX female ,
XX-male +Gg disruptive selection.
eg fur length in rabbits
.
If they become so
↓
homozygous or
nemizygos +g different it could lead to speciation
TtGg Ttgg tGg tgg
heterozygous
Speciation
↓
Variation
<
genetic
↓
> mutations
-
substitution
allopatric ,
2 populations sympatric groups , of a
deletion the
meiosis
become population
Epistasis in
S
modifies or geographically same area
-
environmental addition - > an allele
independent
-
-
segregation translocation masks the expression become
separated eg split by reproductiveally
-
.
of homologous
. blood group
eg chromosomes an a p of another
A
dryland or river ect. isolated
.
I
Chiasmata
B-E-bbE---ee eglab coat colour
-
-
random
Edetermines weather
fertilisation 9 : 3 : 4
melanin is deposited at all
Isolating mechanisms
discontinuous variation
B determines how much geographical-river splits population
T purely genetic
·
melanin is deposited
ecological-diff habitats in the same area
j www
Aa Aa an random
mating hybrid sterility > offspring of hybrid
·
cross
-
I a
Fight
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller anastazjaohearn. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R81,50. You're not tied to anything after your purchase.
