Suppose that your mother and father both have cystic fibrosis, which is caused by a recessive allele. What are the odds of you having only one allele for the disorder?
a. 1
b. 1 in 2
c. 1 in 4
d. 0
Ans: d. 0
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The stalk that supports the individual eudicot leaf is the ____
a. collenchyma b. petiole c. node d. sclereid e. peduncle
The difference between normal and sickle-cell
hemoglobin is based upon a. the number of amino acids in the molecule. b. the substitution of one amino acid for another. c. the number and orientation of the amino acid chains attached to the heme portion of the molecule. d. the number of oxygen molecules that can be carried. e. the type of bone marrow that produces it.
Should we buy and eat food that comes from genetically modified plants and animals? Defend your answer based on
previous knowledge and on what you learned from this chapter. What will be an ideal response?
A detrital food web and a grazing food web are separate because each starts at a different level.
Answer the following statement true (T) or false (F)