A smooth pattern of variation along a geographical gradient is referred to as a ____
a. ring species
b. hybrid zone
c. morphological species
d. cline
e. cluster of subspecies
ANSWER: d
You might also like to view...
Which autosomal dominant condition results in defective connective tissue production affecting blood vessels like the
aorta? a. cystic fibrosis
b. PKU c. Tay-Sachs disease d. Marfan syndrome e. achondroplasia
Pheromones are
A. chemicals. B. used to communicate. C. specific to each species. D. All of these answers are true.
Molecular analysis of lactase DNA __________ in humans shows that genes for that enzyme have __________ evolved in Africa and Europe to produce the same result.
Fill in the blank(s) with the appropriate word(s).
Cytoplasmic membranes of ________ are composed of unbranched phospholipids
A) bacteria B) eukaryotes C) archaea D) prokaryotes E) bacteria and eukaryotes