Which of the following is used as a best genetic vector in plants?
Bacillus thurengiensis
Agrobacterium tumifaciens
Pseudomonas putida
All of the above
Balbiani rings are the structural features of
allosomes
polytene chromosomes
autosomes
Lampbrush chromosomes
Presence of tail in a child is an example of
atavism
divergent evolution
convergent evolution
mutation
Accessory sexual character in female is promoted by
androgen
progesterone
estrogen
testosterone
C.
estrogen
Estrogens are secreted by cells of Graafian follicles. Estradiol is the principal feminizing estrogen. It stimulates the development of female secondary sex characteristics during puberty and maintains them through the reproductive years of adult life.
X- linked recessive gene is
always expressed in male
always expressed in femlae
lethal
sub- lethal