The pedigree represents how a certain sex-linked recessive trait is inherited. which is the most likely genotype of the grandfather?

xdy
xdxd

xdy

xdxd

Which situation is most likely to show a constant rate of change?

How is the uk’s government is solving the air pollution problem?

Drugs have a high potential for abuse. there is no routine therapeutic use for these drugs and they are not available for regular use. they may be obtained for “investigational use only” by applying to the u.s. drug enforcement agency. examples include heroin and lsd. which scheduled drug is this?