A disease caused by an autosomal primary non-disjunction is
Down's syndrome
Klinefelter's syndrome
Turner's syndrome
Turner's syndrome
If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?
1
11
33
33
A gene whose expression helps to identify transformed cell is known as
Selectable marker
Vector
Plasmid
Plasmid
Presence of plants arranged into well defined vertical layers depending on their height can be seen best in :
Tropical Savannah
Tropical Rain Forest
Grassland
Grassland
The genotypes of a Husband and Wife are IAIB and IAi. Among the blood types of their children, how many different genotypes and phenotypes are possible?
3 genotypes ; 3 phenotypes
3 genotypes ; 4 phenotypes
4 genotypes ; 3 phenotypes
4 genotypes ; 3 phenotypes
Which of the following is correctly matched for the product produced by them?
Acetobacter aceti : Antibiotics
Methanobterium : Lactic acid
Penicillium notatum : Acetic acid
Penicillium notatum : Acetic acid
Asymptote in a logistic growth curve is obtained when
The value of 'r' approaches zero
K = N
K > N
K > N
The DNA fragments separated on an agarose gel can be visualised after staining with
Bromophenol blue
Acetocarmine
Aniline blue
Aniline blue
Functional megaspore in an angiosperm develops into
Ovule
Endosperm
Embryo sac
Embryo sac
C.
Embryo sac
Megaspore is the first cell of female gametophytic generation in angiosperm. It undergoes three successive generations of free nuclear mitosis to form 8-nucleated and 7-celled embryo sac.
Among the following characters, which one was not considered by Mendel in his experiments on pea?
Stem – Tall or Dwarf
Trichomes – Glandular or non-glandular
Seed – Green or Yellow
Seed – Green or Yellow