The places in between beads of nucleosomes in chromosomes, where DNA is straight, are termed:
A.Speacers
B.Linkers
C.Both (a) & (b)
D.None of these
Category: Cytogenetics Mcqs
Biochemical nature of gene was established by:
A.Avery and Macleod
B.Avery, Macleod and McCarty
C.Jacob and Monad
D.Holley and Nirenberg
Genetic mutations occur in:
A.Chromosomes
B.DNA
C.RNA
D.Nucleus
In Morgan’s experiment on linkage the recombinant types of test cross with F1, hybrids of gray body long winged and black body vestigial winged parents are:
A.Gray body vestigial wings
B.Black body long wings
C.Both (a) & (b)
D.None of these
Term gene refers to:
A.A portion of DNA
B.A portion of RNA
C.Both (a) & (b)
D.None of these
Chromosomal theory of inheritance was given by:
A.Sutton
B.Altmann
C.Miescher
D.All of these
Five major types of histones are:
A.H1, H2, H3, H4 and H5
B.H1, H2a, H2b, H3 and H4
C.H1a, H1b, H2a, H2b and H3
D.None of these
Percentage of recombinant types in Morgan’s experiment was:
A.13%
B.17%
C.23%
D.27%
Mutations are harmful:
A.Always
B.Never
C.Rarely
D.Mostly
DNA model was studied with help of x-rays by:
A.Wilkins
B.Watson
C.Crick
D.Watson and Crick
