Darwin/Wallace’s theory of
evolution by natural selection
divergent
evolution
convergent
evolution
Gregor
Mendel’s
experiments
experiments carried out
experimental techniques led to his
success
outcomes of monohybrid
crosses involving simple
dominance
homozygous and
heterozygous
genotypes
allele and
gene
dominant and
recessive alleles and
phenotype
importance of Mendel’s
work was not recognised
until some time after it
was published
Inheritance
Sutton and Boveri
and the
importance of
chromosomes
chemical nature of chromosomes and
genes
DNA is a double-stranded molecule twisted into a
helix with each strand comprised of a
sugar-phosphate backbone and attached bases –
adenine (A), thymine (T), cytosine (C) and guanine
(G) – connected to a complementary strand by
pairing the bases, A-T and G-C
relationship between the structure and
behaviour of chromosomes during meiosis
and the inheritance of genes
role of gamete formation and sexual
reproduction in variability of
offspring
inheritance of
sex-linked genes,
and alleles that
exhibit
co-dominance and
do not produce
simple Mendelian
ratios
work of Morgan that
led to the
understanding of sex
linkage
relationship
between
homozygous
and
heterozygous
genotypes and
the resulting
phenotypes in
co-domanance
environmental effects on
the expression of a gene
DNA
process of DNA replication
+ significance
process by which DNA controls
the production of polypeptides
relationship between
proteins and polypeptides
mutations in DNA may lead to
the generation of new alleles
evidence for the mutagenic
nature of radiation
source of variation in
organisms has provided
support for Darwin’s
theory of evolution by
natural selection
concept of punctuated
equilibrium in evolution +
how it differs from the
gradual process proposed
by Darwin
reproductive
technologies
and genetic
engineering
current reproductive techniques may
alter the genetic composition of a population
artificial insemination
artificial pollination
cloning
processes used to produce
transgenic species
the potential impact of the use of
reproduction technologies on the
genetic diversity of species