Question
“Point Mutations” involve:
Changes in chromosome affecting more than one gene simultaneously.
Change in number of chromosomes
Changes in nucleotide sequence at a single place affecting a single gene
None of the above
Changes in chromosome affecting more than one gene simultaneously.
Change in number of chromosomes
Changes in nucleotide sequence at a single place affecting a single gene
None of the above
The correct answer is: Changes in nucleotide sequence at a single place affecting a single gene
A point mutation is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome. Point mutations have a variety of effects on the downstream protein product—consequences that are moderately predictable based upon the specifics of the mutation. These consequences can range from no effect (e.g. synonymous mutations) to deleterious effects (e.g. frameshift mutations), with regard to protein production, composition, and function.
Related Questions to study
Cystic fibrosis occurs due to?
Cystic fibrosis is a disorder that damages your lungs, digestive tract and other organs. It's an inherited disease caused by a defective gene that can be passed from generation to generation. Cystic fibrosis affects the cells that produce mucus, sweat and digestive juices.
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¶Cystic fibrosis is inherited in an autosomal recessive manner.[1] It is caused by the presence of mutations in both copies of the gene for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. Those with a single working copy are carriers and otherwise mostly healthy. CFTR is involved in the production of sweat,digestivefluids, and mucus.
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Cystic fibrosis occurs due to?
Cystic fibrosis is a disorder that damages your lungs, digestive tract and other organs. It's an inherited disease caused by a defective gene that can be passed from generation to generation. Cystic fibrosis affects the cells that produce mucus, sweat and digestive juices.
¶
¶Cystic fibrosis is inherited in an autosomal recessive manner.[1] It is caused by the presence of mutations in both copies of the gene for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. Those with a single working copy are carriers and otherwise mostly healthy. CFTR is involved in the production of sweat,digestivefluids, and mucus.
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Examples of chromosomal mutations are ________.
A chromosome mutation is an unpredictable change that occurs in a chromosome. These changes are most often brought on by problems that occur during meiosis (division process of gametes) or by mutagens (chemicals, radiation, etc.). Chromosome mutations can result in changes in the number of chromosomes in a cell or changes in the structure of a chromosome. Unlike a gene mutation which alters a single gene or larger segment of DNA on a chromosome, chromosome mutations change and impact the entire chromosome.
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- ¶
- Chromosome mutations are alterations occurring in chromosomes that typically result from errors during nuclear division or from mutagens. ¶
- Chromosome mutations result in changes in chromosome structure or in cellular chromosome numbers. ¶
- Examples of structural chromosome mutations include translocations, deletions, duplications, inversions, and isochromosomes. ¶
- Abnormal chromosome numbers result from nondisjunction, or the failure of chromosomes to separate correctly during cell division. ¶
- Examples of conditions that result from abnormal chromosome numbers are Down syndrome and Turner syndrome. ¶
- Sex chromosome mutations occur on either the X or Y sex. ¶
¶The four main types of structural chromosomal aberrations are deletion, duplication, inversion, and translocation. Deletions occur when a portion of the chromosome is deleted, or taken out, which can make that chromosome less functional.
Examples of chromosomal mutations are ________.
A chromosome mutation is an unpredictable change that occurs in a chromosome. These changes are most often brought on by problems that occur during meiosis (division process of gametes) or by mutagens (chemicals, radiation, etc.). Chromosome mutations can result in changes in the number of chromosomes in a cell or changes in the structure of a chromosome. Unlike a gene mutation which alters a single gene or larger segment of DNA on a chromosome, chromosome mutations change and impact the entire chromosome.
¶
- ¶
- Chromosome mutations are alterations occurring in chromosomes that typically result from errors during nuclear division or from mutagens. ¶
- Chromosome mutations result in changes in chromosome structure or in cellular chromosome numbers. ¶
- Examples of structural chromosome mutations include translocations, deletions, duplications, inversions, and isochromosomes. ¶
- Abnormal chromosome numbers result from nondisjunction, or the failure of chromosomes to separate correctly during cell division. ¶
- Examples of conditions that result from abnormal chromosome numbers are Down syndrome and Turner syndrome. ¶
- Sex chromosome mutations occur on either the X or Y sex. ¶
¶The four main types of structural chromosomal aberrations are deletion, duplication, inversion, and translocation. Deletions occur when a portion of the chromosome is deleted, or taken out, which can make that chromosome less functional.
Cri-du-chat syndrome occurs as a result of?
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.
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¶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.
Cri-du-chat syndrome occurs as a result of?
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.
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?
