Use the Following to Answer Questions

question 63

Multiple Choice

Use the following to answer questions :
In a species of tortoise,foot size (big or small) is controlled by one gene,while shell shape (round or lumpy) is controlled by another gene.Suppose that a big-footed lumpy-shelled tortoise mates with a small-footed round-shelled tortoise.Eight offspring result: four big-footed round-shelled tortoises and four small-footed round-shelled tortoises.(Assume that the parents are not necessarily homozygous for each allele. )
-Which statement about the inheritance of shell shape in tortoises is most likely to be correct,given your genetic analysis of the tortoise family?

• A) Lumpy is dominant to round.
• B) Round is dominant to lumpy.
• C) Round and lumpy are codominant.
• D) Shell shape is an example of blending inheritance.
• E) This cannot be answered without more information.

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Definitions:

Antibody

A blood protein produced in response to and counteracting a specific antigen; antibodies recognize and neutralize foreign substances such as bacteria and viruses.

Antigen

A substance that induces an immune response in the body, especially the production of antibodies.

Epitope

A specific part of an antigen that is recognized and bound by an antibody or a receptor of the immune system.

Fab Fragments

Regions of an antibody molecule that bind to antigens, consisting of one constant and one variable domain of each of the heavy and the light chain.