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The best notes on A-level Biology : Topic 7 £5.96
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The best notes on A-level Biology : Topic 7
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  • June 22, 2024
  • 12
  • 2023/2024
  • Lecture notes
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Genetics and
Inheritance
constitution
genotype an
organism's genetic
-




leg complete
.
set of genetic material
including all aleles

Phenotype - the expression of the
genetic constitution
and its interaction with the environment
the characteristicts
leg . an
organism
has)
Alleles
↳ different - m
in a diploid organism
,
versions of a
there are two copies of each

gene
Chromosome (2n)
can be a
find
:



genesare on
i
a
dominant some
recessive
↳ its locus
Cadominant

↳ both expressed in
neither
different allels
the same gene at its

phenotype
is
, as fixed Locus
recessive

leg
. have a mixture samealldeof
gene homozygos
he
of both)

different allelesofgene =
hetrozgo e




hybrid inheritance
F, is first
L characteristic controlled generation offspring
by
a
single gene
-
dad inheritance
mum


Aa Aa
manohybrid
of codominant alleles
x




⑭ ④ ④ B
D

<




BABBAB
↓ ur re

A A Aa Aa aa Capital
letter
shows
mum
codominance
A a are superscript


- a
A AA

Aa
Aa

aa

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