Genes and Alleles – Check Test
1. An allele
is
A a form of a gene.
B another name for a gene.
C a type of chromosome.
D a gamete.
2. The
following is a list of characteristics
found in
some plants and animals.
1
Blood group in humans
2
Dwarfness in pea plants
3
Grain colour in maize
4
Golden coat in
To which
of these characteristics is it more appropriate to
apply
the term “allele” rather than “gene”?
A 1 and 3
B 1 and 4
C 2 and 3
D 2 and 4
3. How many
alleles of a gene are present in a gamete?
A 1
B 2
C 4
D 8
4. How many
alleles of a gene are present in a body cell?
A 1
B 2
C 4
D 8
5. After
fertilisation, the number of alleles of a gene
in the
zygote is
A half of that present in a gamete.
B the same as that present in a gamete.
C double that present in a gamete.
D four times that present in a gamete.
7. An
organism can have different alleles of the same
gene by
A inheriting them from the same parent.
B changing one of them as it develops.
C inheriting them from different parents.
D losing one at fertilisation.
8. The table
shows four ways by which a pea plant can
can
inherit its alleles for height.
|
|
Allele from male parent |
Allele from female parent |
|
1 |
for tallness |
for tallness |
|
2 |
for dwarfness |
for dwarfness |
|
3 |
for dwarfness |
for tallness |
|
4 |
for tallness |
for dwarfness |
In which
two cases will there be a question regarding the
height
characteristic of the plant?
A 1 and 2
B 1 and 3
C 2 and 3
D 3 and 4