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Leaving Certificate Biology
Genetics & Inheritance 1 iQuiz
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Who is regarded as the father of
genetics?
Punnett
Mendel
Harvey
Fleming
Alternative forms of a gene are
known as …
Autosomes
Alleles
Junk genes
Heterosomes
The diploid number of
chromosomes is restored as a
result of …
Mitosis
Meiosis
Gamete
formation
Fertilisation
Which of the following refers to
the formation of an intermediate
phenotype from the heterozygous
condition?
Incomplete
dominance
Linkage
Independent
assortment
Segregation
Alleles are not found in pairs in …
Fertilised eggs
Muscle cells
Nerve cells
Sperm cells
The physical appearance of an
individual as a result of the
interaction of the genotype with
the environment is called the …
Gene expression
Phenotype
Genotype
Gene pharming
Which of the following are possible
gametes from TTRr?
TR, Tr
TT, Rr
TT, TR
TT, Tr
A person with blood type A may
receive a transfusion of which
type(s) of blood?
A & AB
A&O
AB & O
AB
Which of the following is a cross
which results in 75% of the
progeny having the dominant
phenotype?
TT x tt
Tt x tt
Tt x Tt
TT x Tt
The process of changing the
information in a gene into a
protein and the effect that protein
has on the organism is called …
Gene pharming
Genotype
Gene expression
Phenotype
Two heterozygous tall plants, each
with a recessive gene for dwarfism,
are crossed. What proportion of
their offspring will be dwarf?
1 in 2
1 in 4
1 in 3
1 in 8
A normal man marries a woman who is a
carrier of the recessive haemophilia gene,
which is sex-linked. What proportion of
their offspring could have the condition?
1 in 2
1 in 4
1 in 6
1 in 8
What term is given to pieces of DNA that
do not code for a protein and seem to have
no function other than to separate genes?
They are also known as junk genes.
Interons
Genotype
Exons
Phenotype
A colour-blind man marries a woman
with normal vision, whose father was
colour blind. What are the chances that a
son of theirs will be colour-blind?
75%
100%
25%
50%
What ratio would you expect in a
dihybrid cross between a parent
heterozygous for both traits and a parent
homozygous recessive for both traits
(Independent assortment occurs).
9:3:3:1
1:1:1:1
1:1
3:1
Genetics & Inheritance 1 iQuiz
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