WorksheetsMutation
Total questions: 20
Worksheet time: 20mins
Which of the following is not the type of gene mutation
Base substitution
Base deletion
Deletion
Base insertion
Give on example of chemical mutagen
X-ray
Cosmic radiation
Colchicine
Nuclear bomb
What causes the sickle cell anaemia in human
Deletion of the short arm of chromosome 5
Base substitution, Thymine replaced by Adenine
Base deletion
Doubling of chromosome number
Base deletion can lead to what condition in DNA
Stop codon become start codon
One codon become affected
Silent mutation
Frameshift mutation
Based on the condition of the above karyotype. The individual probably suffer with what genetic disorder
Cat syndrome
Down syndrome
Cri du chat
Sickle cell anaemia
The mutation cause the codon to change into stop codon. Which of the following related to this mutation.
Missense mutation
Silent mutation
No mutation
Nonsense mutation
A segment of a chromosome is break off at two points and rotate through 180° within a chromosome, and rejoined with a reversed orientation.
The above situation refer to
Inversion
Deletion
Duplication
Translocation
What is nondisjunction
Homologous chromosomes fail to separate properly during meiosis II
Homologous chromosomes fail to separate properly during meiosis I
Doubling of chromosome number
Gamete become monosomy
Monosomy 21 produced when..
Abnormal gamete (n-1) fertilize normal gamete (n)
Abnormal gamete (n-1) fertilize abnormal gamete (n-1)
Abnormal gamete (n+1) fertilize normal gamete (n)
Abnormal gamete (n-1) fertilize abnormal gamete (n+1)
When abnormal gamete (22+XY) fertilize with normal gamete (22+X), which of the following related to this situation
Turner syndrome developed
Down syndrome developed
The individual is male with feminine body characteristics
It is Trisomy 21
When abnormal gamete (22+0) fertilize with normal gamete (22+X), which of the following related to this situation
Turner syndrome
Down syndrome
The individual is male with feminine body characteristics
It is Trisomy 21
The karyotype shown above is the karyotype of what disorder
Turner syndrome
Down syndrome
Klinefelter syndrome
Cri du chat
Individual that has more than two chromosome sets that are all derived from a same (single) species known as..
Autophagy
Polyploidy
Autopolyploidy
Allopolyploidy
The hybrid between Species A and Species B produce new infertile Species C. What causes the Species C to be infertile?
Presence of homologous chromosomes
Reproduce asexually
No pairing of homologous chromosome during meiosis I
Doubling of chromosomes number
In allopolyploidy the ploidy number of fertile tetraploid plants is
4n
6n
2n
3n
"Hybridisation of two types of plant produced sterile hybrid with 24 chromosomes number, after many years the plant become fertile"
Name the process that causes the plant become fertile
Allopolyploidy
Spontaneous mutation
Non disjunction
Non homologous
"Hybridisation of two types of plant produced sterile hybrid with 24 chromosomes number, after many years the plant become fertile"
What is the chromosomes number for the fertile plant
24
48
14
42
Base substitution can cause the formation of abnormal polypeptide in haemoglobin. What is the name of the genetic disorder?
Leukemia
Anemia
Thalassemia
Sikle cell anaemia
When abnormal gamete (22+XY) fertilised with normal gamete (22+X), which of the following related to this situation
Klinefelter syndrome
Down syndrome
Turner syndrome
Trisomy 23
What causes the cri du chat syndrome
Deletion of the short arm of chromosome 5
Base substitution, Thymine replaced by Adenine
Base deletion
Doubling of chromosome number
