Earth's location in space can be described as being:
a - near the arm of a spiral galaxy
b - at the center of a spiral galaxy
c - in a cluster of galaxies
d - within a solar system of binary stars

answer; a male inherits only one allele of the x-linked gene controlling hair color;

a time line cause it goes from 685 to 978

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

i believe the answer is a or 1