Question

1) Relative time of divergence from a common ancestor can be estimated by

a. determining how many serum antibodies are present in blood samples of individuals.

b. identifying when different species lived using the geological time scale.

c. comparing the degree of difference in protein structure

d. determining how many different antigens each type of organism has.

2. The serum ELISA test is based on interaction between

a. serum antigens and specific antibodies

b. combining two different kinds of serum

c. serum DNA and antinuclear antibodies

d. visible agglutination responses

3. When performing a serum ELISA procedure the sample wells are first coated with

a. known serum antigens

b. dye molecules

c. antibodies formed as part of an immune response

d. enzymes

Answer 1

1) Correct answer : Option C

Comparing the degree of difference in protein structure is the best method to estimate relative time of divergence from a common ancestors because divergence is the process in which two ancestral populations are reproductively isolated due to mutations in there genome . comparing degree of difference of protein structure is best method

2)Correct answer : Option A

The serum ELISA test is based on interaction between serum antigens and specific antibodies

3) Correct answer : Option A

When performing a serum ELISA procedure the sample wells are first coated with known antigen serum because it is used to detect the antibody