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Particular array of chromosomes that an individual processes is called its:
NUMS 2019 Reconduct
Biology
Chromosomes and DNA
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Which of the following enzymes is used to join DNA fragments?
NTS 2016 DUHS & JSMU
Biology
Chromosomes and DNA
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Haploid and monoploid numbers of chromosomes of hexaploid wheat are:
NTS 2014
Biology
Chromosomes and DNA
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A typical human chromosome contains _________ nucleotides in its DNA
Which is incorrect?
Transfer of genetic material from one cell to another that can alter the genetic makeup of recipient cell is called
Part of the amino acid sequences In normal and sickle cell hemoglobin are shown.
Normal haemoglobin
Thr – pro – glu – glu
Sickle cell haemoglobin
thr – pro – val – glu
mRNA codons for these amino acids are
Glutamine (glu) GAA GAG
Threonine (thr) ACU ACC
Proline (pro) CCU CCC
Valine (val) GUA GUG
Which transfer RNA molecule is Involved in the formation of this part of the sickle cell haemoglobin?
NTS 2016 DUHS & JSMU
Biology
Chromosomes and DNA
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An individual has an additional sex chromosome. Which syndrome does he have?
NUMS 2014
Biology
Chromosomes and DNA
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Phenylketonuria is
NTS 2016 DUHS & JSMU
Biology
Chromosomes and DNA
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In semi-conservative replication
Diameter of DNA double helix is:
NUMS 2015
Biology
Chromosomes and DNA
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What will be the approximate length of a DNA strand having 500 nucleotides?
NUMS 2015
Biology
Chromosomes and DNA
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HIDE ELIMINATED OPTIONS
The Meselson and Stahl experiment confirmed that DNA replicates in _____ manner.
NUMS 2019 Reconduct
Biology
Chromosomes and DNA
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The number of base pairs in a complete helical turn is/are:
NUMS 2020
Biology
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In Maxam – Gilbert method, DNA threads are:
NUMS 2015
Biology
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Transcription is the process in which an RNA copy of the DNA sequence and coding the gene is produced with the help of an enzyme called:
PMC 2020
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The length of okazaki fragments in eukayotes is
A fern has _____ pairs of chromosomes.
NTS 2012
Biology
Chromosomes and DNA
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A tortion of chromatin that is condensed only during cell division is
Y chromosome in humans:
NUMS 2015
Biology
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Locus is defined as:
NUMS 2019 Reconduct
Biology
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What is the effect of enzyme DNA ligase?
PMC 2020
Biology
Chromosomes and DNA
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DNA contains
The total of all the alleles in a population is called a:
NUMS 2014
Biology
Chromosomes and DNA
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Rate of DNA replication by DNA polymerase is
Chromosomes are composed of
Phenotype is:
PMC 2020
Biology
Chromosomes and DNA
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The chromosomes with equal arms are called:
NTS 2018
Biology
Chromosomes and DNA
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The phenomenon known as crossing-over occurs during:
NTS 2017
Biology
Chromosomes and DNA
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Which statement is correct?
The combination of XXY (47) chromosomes results in:
NTS 2012
Biology
Chromosomes and DNA
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In alkaptonuria
Chromosome is made of
Which statement correctly describes the transcription of DNA?
PMC 2020
Biology
Chromosomes and DNA
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DNA has a helical shape with the diameter of
Evolutionary relationship among species are reflected in their ________.
NUMS 2020
Biology
Chromosomes and DNA
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Which of the following RNA sequences would be transcribed from the DNA sequence ATGGCTAGGAC?
NTS 2017
Biology
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In a typical nucleotide, the nitrogenous base is attached to _______ carbon of pentose sugar.
NTS 2010
Biology
Chromosomes and DNA
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An anticodon is the sequence of the nitrogenous bases on the:
NTS 2014
Biology
Chromosomes and DNA
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Highly condensed portions of the chromatin are called:
NTS 2011
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Histones have abundance of amino acids
Mutations can occur in:
NUMS 2016
Biology
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What would be the number of nucleotides for a protein molecule of about 142 amino acids?
NUMS 2020
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Chromosomes and DNA
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The genotype of a normal male in humans is ______ chromosomes.
NTS 2012
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Central dogma is
Genetic information in the DNA is encoded as:
NTS 2018
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“Law of independent assortment” states:
PMC 2020
Biology
Chromosomes and DNA
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The particular array of chromosomes that an individual possesses is called its:
PMC 2020
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Bacteria were grown in a medium containing heavy isotope of nitrogen (N15) for many generations and all their DNA contained many heavy nitrogen only. A bacterium of this type was transferred to normal medium and allowed to duplicate. After two divisions of heavy DNA is likely to be that:
NTS 2012
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The biochemical analysis of a sample of DNA shows that 32% of the nitrogenous bases are cytosine. What is the total % of adenine and uracil in RNA transcribed from this DNA?
NTS 2015 SMBBMC
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The true E.Coli replicating enzyme is
Within the chromosomes, each chromatid contains ______ DNA molecule:
NUMS 2020
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Gene mutations take place in:
NUMS 2014
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The sequence of nucleotides that determines the amino acid sequence of a protein is
In DNA A.
During DNA replication ______ attaches the fragment to the lagging strand.
NUMS 2019 Reconduct
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The diploid human chromosome set has:
NTS 2016 SMBBMC
Biology
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Who discovered DNA?
Which of the following can be blocked, if one wants to stop translation of mRNA?
NUMS 2019 Reconduct
Biology
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Which of the following is NOT the part of RNA?
NTS 2018
Biology
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Genetic code is a ______ code and out of 64 codons, _____ are nonsense codons.
NUMS 2019 Reconduct
Biology
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Which of the following statements correctly describes homologous chromosomes?
NTS 2016 DUHS & JSMU
Biology
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