Question
Cri-du-chat syndrome occurs as a result of?
Point mutation.
Deletion mutation.
Inversion mutation.
Duplication mutation.
Point mutation.
Deletion mutation.
Inversion mutation.
Duplication mutation.
The correct answer is: Deletion mutation.
Cri du chat syndrome is a rare genetic disorder caused by a missing section on a particular chromosome known as Chromosome 5. Sometimes, material from another chromosome is missing as well. Around one in every 50,000 or so babies is diagnosed with this disorder.
¶Cri du chat syndrome is a chromosomal disorder caused by a partial deletion (monosomy) of a varying length of the short arm (p) of chromosome 5. Chromosomes, which are present in the nucleus of human cells, carry the genetic information for each individual.
¶
¶Cri-du-chat syndrome is caused by a deletion of the end of the short (p) arm of chromosome 5. This chromosomal change is written as 5p-. The size of the deletion varies among affected individuals; studies suggest that larger deletions tend to result in more severe intellectual disability and developmental delay than smaller deletions.
Related Questions to study
What is the evolutionary purpose of cells that undergo crossing over?
crossing over provides genetic diversity in specious which is the major cause of process of evolution.
- Process of evolution.
- Construction of genetic maps.
- Production of new gene combination
What is the evolutionary purpose of cells that undergo crossing over?
crossing over provides genetic diversity in specious which is the major cause of process of evolution.
- Process of evolution.
- Construction of genetic maps.
- Production of new gene combination
Mutation occurs at the time of?
mutation can be occur when the cell are in dividing phase or non dividing phase.
mutation occurs naturally or artificially.
in cell division of meiosis , during prophase one there is change in the segment of chromosomes cases mutation due to which the progeny is differ from the parents.
In DNA replication due to some chemical mutagen , there is miss paring or wrong of base pair causes the mutation.
Mutation occurs at the time of?
mutation can be occur when the cell are in dividing phase or non dividing phase.
mutation occurs naturally or artificially.
in cell division of meiosis , during prophase one there is change in the segment of chromosomes cases mutation due to which the progeny is differ from the parents.
In DNA replication due to some chemical mutagen , there is miss paring or wrong of base pair causes the mutation.
Which of the following does not cause variation
The variation caused by change in the number and location of genes which affect the individual genotypically and phenotypically.
Which of the following does not cause variation
The variation caused by change in the number and location of genes which affect the individual genotypically and phenotypically.
Which of the following correctly defined the point mutation :
mutation of two type that is frame shift mutation or point mutation.
in point mutation there is a change in single base pair of the DNA either extra base pair added or deleted.
Which of the following correctly defined the point mutation :
mutation of two type that is frame shift mutation or point mutation.
in point mutation there is a change in single base pair of the DNA either extra base pair added or deleted.
The mutations are mainly responsible for:
mutation is the process of change in number and composition of genes and chromosomes ,hence it causes variation in an organism.
The mutations are mainly responsible for:
mutation is the process of change in number and composition of genes and chromosomes ,hence it causes variation in an organism.
__________ is the process in which the one or more nucleotide removed from the DNA or the segment of chromosomes is removed which causes changes on the number of genes or nucleotide, hence the resultant DNA is formed which further translated into the proteins shows different effect?
__________ is the process in which the one or more nucleotide removed from the DNA or the segment of chromosomes is removed which causes changes on the number of genes or nucleotide, hence the resultant DNA is formed which further translated into the proteins shows different effect?
__________among which of the following term used for the changes in the DNA?
All the above options causes the changes in the DNA hence term changes are called variation.
__________among which of the following term used for the changes in the DNA?
All the above options causes the changes in the DNA hence term changes are called variation.
How many codons are required to code for one amino acid?
How many codons are required to code for one amino acid?
_____________ is the transfer of characters from parents to offspring.
_____________ is the transfer of characters from parents to offspring.
Mitosis is also known as _________________.
Mitosis is also known as _________________.
Genetic variation is not caused by:
Genetic variation is not caused by:
Crossing over occurs in which phase?
Crossing over occurs in which phase?
If a diploid cell with a diploid number of 36 chromosomes undergoes meiosis. How many chromosomes are present in each daughter cell after division?
If a diploid cell with a diploid number of 36 chromosomes undergoes meiosis. How many chromosomes are present in each daughter cell after division?
What is the significance of crossing over?
What is the significance of crossing over?
____________ type of cell division takes place in gametes.
____________ type of cell division takes place in gametes.
