Question
The following image shows the mechanism of _______ mutation.
Point mutation.
Inversion mutation.
Deletion mutation.
None of the above.
Point mutation.
Inversion mutation.
Deletion mutation.
None of the above.
Hint:
We can see a part of a chromosome is getting removed.
The correct answer is: Deletion mutation.
- Deletions alter the DNA sequence by removing at least one nucleotide within the gene. Small deletions remove one or a few nucleotides within a gene, whereas large deletions may remove the entire gene or several adjacent genes.
- Deleted DNA may alter the function of the affected protein. It causes cystic fibrosis, Turner syndrome, and Williams syndrome.
Related Questions to study
_____________ mutation causes sickle cell anemia.
Frameshift mutation.
Point mutation.
Translocation mutation.
None of the above.
_____________ mutation causes sickle cell anemia.
Frameshift mutation.
Point mutation.
Translocation mutation.
None of the above.
The picture shows which type of chromosomal mutation?
Deletion mutation.
Inversion mutation.
Translocation mutation.
Duplication mutation.
The picture shows which type of chromosomal mutation?
Deletion mutation.
Inversion mutation.
Translocation mutation.
Duplication mutation.
Down’s syndrome is an example of:
Aneuploidy
Deletion mutation
Polyploidy
Point mutation
Down’s syndrome is an example of:
Aneuploidy
Deletion mutation
Polyploidy
Point mutation
______ mutations originate during meiosis while ______ mutation originates during mitosis.
Germinal, somatic
Germinal, spontaneous
Spontaneous, point
Somatic, germinal
______ mutations originate during meiosis while ______ mutation originates during mitosis.
Germinal, somatic
Germinal, spontaneous
Spontaneous, point
Somatic, germinal
_____________ is the transfer of characters from parents to offspring.
Variation
Inheritance
Mutation
Crossing over
_____________ is the transfer of characters from parents to offspring.
Variation
Inheritance
Mutation
Crossing over
Mitosis is also known as _________________.
Equational division
Reductional division
Additional division
None of the above
None of the above
Mitosis is also known as _________________.
Equational division
Reductional division
Additional division
None of the above
None of the above
Genetic variation is not caused by:
Natural selection
Asexual reproduction
Sexual reproduction
Mutation
Genetic variation is not caused by:
Natural selection
Asexual reproduction
Sexual reproduction
Mutation
Crossing over occurs in which phase?
Prophase II
Prophase I
Metaphase II
Metaphase I
Crossing over occurs in which phase?
Prophase II
Prophase I
Metaphase II
Metaphase I
If a diploid cell with a diploid number of 36 chromosomes undergoes meiosis. How many chromosomes are present in each daughter cell after division?
18
16
24
36
If a diploid cell with a diploid number of 36 chromosomes undergoes meiosis. How many chromosomes are present in each daughter cell after division?
18
16
24
36
What is the significance of crossing over?
Cell division
Mutation
Genetic variation
All of the above
What is the significance of crossing over?
Cell division
Mutation
Genetic variation
All of the above
____________ type of cell division takes place in gametes.
Mitotic cell division
Meiotic cell division
Both A and B
None of the above
____________ type of cell division takes place in gametes.
Mitotic cell division
Meiotic cell division
Both A and B
None of the above
After which phase in the cell cycle and DNA replication, meiosis begins?
Interphase
Cytokinesis
G1phase
G2 phase
After which phase in the cell cycle and DNA replication, meiosis begins?
Interphase
Cytokinesis
G1phase
G2 phase
Sexually reproducing organisms produce gametes by the process of?
Mitosis
Meiosis
Cytokinesis
Cell division
Sexually reproducing organisms produce gametes by the process of?
Mitosis
Meiosis
Cytokinesis
Cell division
Meiosis is characterized by
Reduction division
Equal division
Both reduction and equal division
Paining of non-homologous chromosomes
Meiosis is characterized by
Reduction division
Equal division
Both reduction and equal division
Paining of non-homologous chromosomes
Which of the following does not result in variations among siblings?
Independent assortment of genes
Crossing over
Linkage
Mutation
Which of the following does not result in variations among siblings?
Independent assortment of genes
Crossing over
Linkage
Mutation
