Spindle fibers attach to the sister chromosomes and pull them apart. without them, the sisters would still be attached to each other which means there would be no division.
Answer:
Option A
Explanation:
As per the first equation of equilibrium of Hardy Weinberg, the sum of frequencies of alleles at the locus is equal to unity.
Thus,
If "p" represents the frequency of dominant allele, "q" represents the frequency of recessive allele and at equilibrium
Let us assume that value of q is given in question which is equal to
On substituting the given values in above equation we get -
Hence, option A is correct
Answer: Option A. "agammaglobulinemia"
Explanation:
Agammaglobulinemia is defined as the group of genetic immune deficiencies due to low concentration of antibodies in the lymph that is caused by the lack of specific lymphocytes in the blood.
Agammaglobulinemia generally caused bacterial infections that results from failures in immune responses due to defects in B-lymphocytes. B-lymphocytes are responsible for the production of antibodies. Mostly males with X-linked type agammaglobulinemia show signs of bacterial infections, after the IgG antibodies from the mother have been depleted.
Hence, the correct option is A.