Operator genes are controls to which gene mechanism?
Structural gene
Activator gene
Regulator gene
Modulac gene
DNA is specific because it has
number of nucleotides
specific nature of phosphate and sugar
arrangement of protein in DNA
specific nature of purine and pyrimidines
When embryonic development is completed in mother but the embryo not accept nutritent from mother, which is known as
ovoviparous
viviparous
oviparous
All of these
Gastrula is differ from blastula in
three germ layers
micromeres
blastocoel
None of the above
A.
three germ layers
Gastrula is an embryo following blastula. It is a hollow cup- shaped structure having three layers of cells. It moves from surface of blastula by morphogentic movements.
Sertoli cells are associated with
kidney of rabbit
ovary of frog
testis of rabbit
ovary of rabbit