166502
In a mutational event, when adenine is replaced by guanine, it is a case of -
1 Transcription
2 Transition
3 Transversion mutation
4 Frameshift
Explanation:
Point mutation are those mutations that affects a single base pair. The most common nucleotide mutations are substitutions, in which one base is replaced by another. These can be of two types, either transitions or transversion. - In case of transition, Purine is replaced by another Purine (eg AG) and Pyramidine is replaced by another Pyramidine (eg CT) and vice-versa eg - Purine such as adenine may be replaced by purine and guanine. - Transversion substitution refers to a Purine or pyramidine or vice versa, for eg, a pyramidine is replaced by adenine, a purine.
AIPMT-2004
Molecular Basis of Inheritance and
166506
From the following, identify the correct combination of salient features of Genetic Code-
1 Degenerate, Non-overlapping, Non ambiguous
2 Universal, Non-ambiguous, Overlapping
3 Degenerate, Overlapping, Commaless
4 Universal, Ambiguous, Degenerate
Explanation:
The salient feature of genetic code are as follows- - The codon is triplet. 61 codons code for 20 amino acids and 3 codons do not code for any amino acids, hence, they function as stop codons. - One codon codes for only one amino acids, hence, it is unambiguous and specific. - The code is degenerated because some amino acids are coded by more than one codon. - The codon is read in mRNA in a contiguous fashion. There are no punctuations. - The code is nearly universal. - AUG codes for methionine (met) and it also act as initiator codon.
NEET (Odisha)-2019
Molecular Basis of Inheritance and
166510
In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids. -
1 20
2 64
3 61
4 60
Explanation:
. Total Numbers of codon \(=64\) \( { three stop codon } | =64-3 | | =61 \) All the 20 essential amino acid coded by 61 codon, recognized by RNA molecules called tRNA, that act as molecular translators between the nucleic acid and protein languages. There are three stop codon. They are UAA, UGA and UAG, they stop translation.
AIPMT-2003
Molecular Basis of Inheritance and
166522
If the sequence of bases in the coding strand of a double stranded DNA is 5' GTTCGAGTC -3' the sequence of bases in its transcript will be
1 5'-GACUCGAAC-3'
2 5'-CAAGCUCAG-3'
3 5'-GUUCGAGUC-3'
4 5'-CUGAGCUUG-3'
Explanation:
During transcription, one of the two DNA strands functions as template strand and the other functions as coding strand. Template strand serves as template for transcription where as coding strand does not take part in transcription. Hence, the mRNA produced has base sequence complementary to template strand while similar to coding strand except that thymine \(()\) is replaced by uracil (U). Here, \({ll} { Coding strand } | 5^{} { - GTTCGAGTC -3' } | | { Template strand } | 3^{} { - CAAGCTCAG -5' } | | { Transcript } | 5^{} { - GUUCGAGUC -3' } \)
AIIMS-2016
Molecular Basis of Inheritance and
166537
Identify \(P\) and \(Q\) in the following figure?
1 P-Anticodon Q - D - Loop
2 P - D - Loop; \(-\) 廿 C Loop
3 P - Anticodon Loop; \(\) - D - Loop
4 \(\) - Site of amino acid attachment; Q - T \(\) C Loop
Explanation:
An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.
166502
In a mutational event, when adenine is replaced by guanine, it is a case of -
1 Transcription
2 Transition
3 Transversion mutation
4 Frameshift
Explanation:
Point mutation are those mutations that affects a single base pair. The most common nucleotide mutations are substitutions, in which one base is replaced by another. These can be of two types, either transitions or transversion. - In case of transition, Purine is replaced by another Purine (eg AG) and Pyramidine is replaced by another Pyramidine (eg CT) and vice-versa eg - Purine such as adenine may be replaced by purine and guanine. - Transversion substitution refers to a Purine or pyramidine or vice versa, for eg, a pyramidine is replaced by adenine, a purine.
AIPMT-2004
Molecular Basis of Inheritance and
166506
From the following, identify the correct combination of salient features of Genetic Code-
1 Degenerate, Non-overlapping, Non ambiguous
2 Universal, Non-ambiguous, Overlapping
3 Degenerate, Overlapping, Commaless
4 Universal, Ambiguous, Degenerate
Explanation:
The salient feature of genetic code are as follows- - The codon is triplet. 61 codons code for 20 amino acids and 3 codons do not code for any amino acids, hence, they function as stop codons. - One codon codes for only one amino acids, hence, it is unambiguous and specific. - The code is degenerated because some amino acids are coded by more than one codon. - The codon is read in mRNA in a contiguous fashion. There are no punctuations. - The code is nearly universal. - AUG codes for methionine (met) and it also act as initiator codon.
NEET (Odisha)-2019
Molecular Basis of Inheritance and
166510
In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids. -
1 20
2 64
3 61
4 60
Explanation:
. Total Numbers of codon \(=64\) \( { three stop codon } | =64-3 | | =61 \) All the 20 essential amino acid coded by 61 codon, recognized by RNA molecules called tRNA, that act as molecular translators between the nucleic acid and protein languages. There are three stop codon. They are UAA, UGA and UAG, they stop translation.
AIPMT-2003
Molecular Basis of Inheritance and
166522
If the sequence of bases in the coding strand of a double stranded DNA is 5' GTTCGAGTC -3' the sequence of bases in its transcript will be
1 5'-GACUCGAAC-3'
2 5'-CAAGCUCAG-3'
3 5'-GUUCGAGUC-3'
4 5'-CUGAGCUUG-3'
Explanation:
During transcription, one of the two DNA strands functions as template strand and the other functions as coding strand. Template strand serves as template for transcription where as coding strand does not take part in transcription. Hence, the mRNA produced has base sequence complementary to template strand while similar to coding strand except that thymine \(()\) is replaced by uracil (U). Here, \({ll} { Coding strand } | 5^{} { - GTTCGAGTC -3' } | | { Template strand } | 3^{} { - CAAGCTCAG -5' } | | { Transcript } | 5^{} { - GUUCGAGUC -3' } \)
AIIMS-2016
Molecular Basis of Inheritance and
166537
Identify \(P\) and \(Q\) in the following figure?
1 P-Anticodon Q - D - Loop
2 P - D - Loop; \(-\) 廿 C Loop
3 P - Anticodon Loop; \(\) - D - Loop
4 \(\) - Site of amino acid attachment; Q - T \(\) C Loop
Explanation:
An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.
166502
In a mutational event, when adenine is replaced by guanine, it is a case of -
1 Transcription
2 Transition
3 Transversion mutation
4 Frameshift
Explanation:
Point mutation are those mutations that affects a single base pair. The most common nucleotide mutations are substitutions, in which one base is replaced by another. These can be of two types, either transitions or transversion. - In case of transition, Purine is replaced by another Purine (eg AG) and Pyramidine is replaced by another Pyramidine (eg CT) and vice-versa eg - Purine such as adenine may be replaced by purine and guanine. - Transversion substitution refers to a Purine or pyramidine or vice versa, for eg, a pyramidine is replaced by adenine, a purine.
AIPMT-2004
Molecular Basis of Inheritance and
166506
From the following, identify the correct combination of salient features of Genetic Code-
1 Degenerate, Non-overlapping, Non ambiguous
2 Universal, Non-ambiguous, Overlapping
3 Degenerate, Overlapping, Commaless
4 Universal, Ambiguous, Degenerate
Explanation:
The salient feature of genetic code are as follows- - The codon is triplet. 61 codons code for 20 amino acids and 3 codons do not code for any amino acids, hence, they function as stop codons. - One codon codes for only one amino acids, hence, it is unambiguous and specific. - The code is degenerated because some amino acids are coded by more than one codon. - The codon is read in mRNA in a contiguous fashion. There are no punctuations. - The code is nearly universal. - AUG codes for methionine (met) and it also act as initiator codon.
NEET (Odisha)-2019
Molecular Basis of Inheritance and
166510
In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids. -
1 20
2 64
3 61
4 60
Explanation:
. Total Numbers of codon \(=64\) \( { three stop codon } | =64-3 | | =61 \) All the 20 essential amino acid coded by 61 codon, recognized by RNA molecules called tRNA, that act as molecular translators between the nucleic acid and protein languages. There are three stop codon. They are UAA, UGA and UAG, they stop translation.
AIPMT-2003
Molecular Basis of Inheritance and
166522
If the sequence of bases in the coding strand of a double stranded DNA is 5' GTTCGAGTC -3' the sequence of bases in its transcript will be
1 5'-GACUCGAAC-3'
2 5'-CAAGCUCAG-3'
3 5'-GUUCGAGUC-3'
4 5'-CUGAGCUUG-3'
Explanation:
During transcription, one of the two DNA strands functions as template strand and the other functions as coding strand. Template strand serves as template for transcription where as coding strand does not take part in transcription. Hence, the mRNA produced has base sequence complementary to template strand while similar to coding strand except that thymine \(()\) is replaced by uracil (U). Here, \({ll} { Coding strand } | 5^{} { - GTTCGAGTC -3' } | | { Template strand } | 3^{} { - CAAGCTCAG -5' } | | { Transcript } | 5^{} { - GUUCGAGUC -3' } \)
AIIMS-2016
Molecular Basis of Inheritance and
166537
Identify \(P\) and \(Q\) in the following figure?
1 P-Anticodon Q - D - Loop
2 P - D - Loop; \(-\) 廿 C Loop
3 P - Anticodon Loop; \(\) - D - Loop
4 \(\) - Site of amino acid attachment; Q - T \(\) C Loop
Explanation:
An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.
166502
In a mutational event, when adenine is replaced by guanine, it is a case of -
1 Transcription
2 Transition
3 Transversion mutation
4 Frameshift
Explanation:
Point mutation are those mutations that affects a single base pair. The most common nucleotide mutations are substitutions, in which one base is replaced by another. These can be of two types, either transitions or transversion. - In case of transition, Purine is replaced by another Purine (eg AG) and Pyramidine is replaced by another Pyramidine (eg CT) and vice-versa eg - Purine such as adenine may be replaced by purine and guanine. - Transversion substitution refers to a Purine or pyramidine or vice versa, for eg, a pyramidine is replaced by adenine, a purine.
AIPMT-2004
Molecular Basis of Inheritance and
166506
From the following, identify the correct combination of salient features of Genetic Code-
1 Degenerate, Non-overlapping, Non ambiguous
2 Universal, Non-ambiguous, Overlapping
3 Degenerate, Overlapping, Commaless
4 Universal, Ambiguous, Degenerate
Explanation:
The salient feature of genetic code are as follows- - The codon is triplet. 61 codons code for 20 amino acids and 3 codons do not code for any amino acids, hence, they function as stop codons. - One codon codes for only one amino acids, hence, it is unambiguous and specific. - The code is degenerated because some amino acids are coded by more than one codon. - The codon is read in mRNA in a contiguous fashion. There are no punctuations. - The code is nearly universal. - AUG codes for methionine (met) and it also act as initiator codon.
NEET (Odisha)-2019
Molecular Basis of Inheritance and
166510
In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids. -
1 20
2 64
3 61
4 60
Explanation:
. Total Numbers of codon \(=64\) \( { three stop codon } | =64-3 | | =61 \) All the 20 essential amino acid coded by 61 codon, recognized by RNA molecules called tRNA, that act as molecular translators between the nucleic acid and protein languages. There are three stop codon. They are UAA, UGA and UAG, they stop translation.
AIPMT-2003
Molecular Basis of Inheritance and
166522
If the sequence of bases in the coding strand of a double stranded DNA is 5' GTTCGAGTC -3' the sequence of bases in its transcript will be
1 5'-GACUCGAAC-3'
2 5'-CAAGCUCAG-3'
3 5'-GUUCGAGUC-3'
4 5'-CUGAGCUUG-3'
Explanation:
During transcription, one of the two DNA strands functions as template strand and the other functions as coding strand. Template strand serves as template for transcription where as coding strand does not take part in transcription. Hence, the mRNA produced has base sequence complementary to template strand while similar to coding strand except that thymine \(()\) is replaced by uracil (U). Here, \({ll} { Coding strand } | 5^{} { - GTTCGAGTC -3' } | | { Template strand } | 3^{} { - CAAGCTCAG -5' } | | { Transcript } | 5^{} { - GUUCGAGUC -3' } \)
AIIMS-2016
Molecular Basis of Inheritance and
166537
Identify \(P\) and \(Q\) in the following figure?
1 P-Anticodon Q - D - Loop
2 P - D - Loop; \(-\) 廿 C Loop
3 P - Anticodon Loop; \(\) - D - Loop
4 \(\) - Site of amino acid attachment; Q - T \(\) C Loop
Explanation:
An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.
166502
In a mutational event, when adenine is replaced by guanine, it is a case of -
1 Transcription
2 Transition
3 Transversion mutation
4 Frameshift
Explanation:
Point mutation are those mutations that affects a single base pair. The most common nucleotide mutations are substitutions, in which one base is replaced by another. These can be of two types, either transitions or transversion. - In case of transition, Purine is replaced by another Purine (eg AG) and Pyramidine is replaced by another Pyramidine (eg CT) and vice-versa eg - Purine such as adenine may be replaced by purine and guanine. - Transversion substitution refers to a Purine or pyramidine or vice versa, for eg, a pyramidine is replaced by adenine, a purine.
AIPMT-2004
Molecular Basis of Inheritance and
166506
From the following, identify the correct combination of salient features of Genetic Code-
1 Degenerate, Non-overlapping, Non ambiguous
2 Universal, Non-ambiguous, Overlapping
3 Degenerate, Overlapping, Commaless
4 Universal, Ambiguous, Degenerate
Explanation:
The salient feature of genetic code are as follows- - The codon is triplet. 61 codons code for 20 amino acids and 3 codons do not code for any amino acids, hence, they function as stop codons. - One codon codes for only one amino acids, hence, it is unambiguous and specific. - The code is degenerated because some amino acids are coded by more than one codon. - The codon is read in mRNA in a contiguous fashion. There are no punctuations. - The code is nearly universal. - AUG codes for methionine (met) and it also act as initiator codon.
NEET (Odisha)-2019
Molecular Basis of Inheritance and
166510
In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids. -
1 20
2 64
3 61
4 60
Explanation:
. Total Numbers of codon \(=64\) \( { three stop codon } | =64-3 | | =61 \) All the 20 essential amino acid coded by 61 codon, recognized by RNA molecules called tRNA, that act as molecular translators between the nucleic acid and protein languages. There are three stop codon. They are UAA, UGA and UAG, they stop translation.
AIPMT-2003
Molecular Basis of Inheritance and
166522
If the sequence of bases in the coding strand of a double stranded DNA is 5' GTTCGAGTC -3' the sequence of bases in its transcript will be
1 5'-GACUCGAAC-3'
2 5'-CAAGCUCAG-3'
3 5'-GUUCGAGUC-3'
4 5'-CUGAGCUUG-3'
Explanation:
During transcription, one of the two DNA strands functions as template strand and the other functions as coding strand. Template strand serves as template for transcription where as coding strand does not take part in transcription. Hence, the mRNA produced has base sequence complementary to template strand while similar to coding strand except that thymine \(()\) is replaced by uracil (U). Here, \({ll} { Coding strand } | 5^{} { - GTTCGAGTC -3' } | | { Template strand } | 3^{} { - CAAGCTCAG -5' } | | { Transcript } | 5^{} { - GUUCGAGUC -3' } \)
AIIMS-2016
Molecular Basis of Inheritance and
166537
Identify \(P\) and \(Q\) in the following figure?
1 P-Anticodon Q - D - Loop
2 P - D - Loop; \(-\) 廿 C Loop
3 P - Anticodon Loop; \(\) - D - Loop
4 \(\) - Site of amino acid attachment; Q - T \(\) C Loop
Explanation:
An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.
