Point mutation involves
insertion
change in the single base pair
duplication
duplication
B.
change in the single base pair
The point mutations involve alterations in the structure of gene by altering the structure of DNA. Point mutations are of two types- (i) base pair substitution and (ii) Frameshift substitution.
Insertion is the addition of one of more nitrogenous bases to a nucleotide chain.
Duplication is the presence of one block of genes more than once in the haploid component.
Deletion is the removal of one or more nitrogenous bases from a nucleotide chain.
Which one of the following is the correct matching of three items and their grouping category?
|
Items |
Group |
|
Malleus, incus, cochlea |
Ear ossicles |
|
Items |
Group |
|
IIium, ischium, pubis |
Coxal bones of pelvic girdle |
|
Items |
Group |
|
Actin, myosin, Rhodopsin |
Muscle proteins |
|
Items |
Group |
|
Actin, myosin, Rhodopsin |
Muscle proteins |
Which of the following is a pair of viral diseases?
Ringworm, AIDS
common cold, AIDS
Dysentery, common cold
Dysentery, common cold
Alzheimer disease in humans is associated with the deficiency of
dopamine
glutamic acid
acetylcholine
acetylcholine
Study the pedigree chart given below.
what does it show?
Inheritance of a sex-linked inborn error of metabolism like phenylketonuria
Inheritance of a condition like phenylketonuria as an autosomal recessive trait
The pedigree chart is wrong as this is not possible
The pedigree chart is wrong as this is not possible
Which of the following is not used as a biopesticide?
Trichoderma harzianum
Nuclear Polyhedrosis virus (NPV)
Nuclear Polyhedrosis virus (NPV)
Which one of the following is the most likely reason of not occurring regular menstruation cycle in females?
Fertilisation of the ovum
maintenance of the hypertrophical endometrial lining
Maintenance of high concentration of sex hormones in the blood stream
Maintenance of high concentration of sex hormones in the blood stream
