Two extant species of coelacanths and six species of lungfish are members of which lineage?
a. Petromyzontoidea
b. Chondrichthyes
c. Actinopterygii
d. Myxinoidea
e. Sarcopterygii
E
You might also like to view...
Genetic sequences may be useful in predicting protein structure because
A. there is a high statistical frequency of specific amino acids within a given secondary structure B. the folding of the protein is based on how the mRNA folds. C. the physical and energetic properties of the DNA influence protein folding. D. knowing what specific codons are used for each amino acid in the protein can help predict its structure.
Which of the following comparisons between the moss life cycle and fern life cycle is NOT valid?
A. Both kinds of plants have flagellated sperm that need water to reach the female gamete. B. The sporophyte generation is much larger than the gametophyte generation in ferns but is smaller than the gametophyte generation in mosses. C. The spores are produced in capsules on stalks in mosses but in small structure called sori on the underside of leaves in ferns. D. Both kinds of plants depend on wind for dispersal of spores. E. The gametes are produced in gametangia in mosses but on the underside of leaves in ferns.
A set of genetic markers located close together on a single ____________________ is called a haplotype
Fill in the blank(s) with correct word
What generally causes stomata to open?
a. the release of abscisic acid by the roots b. a drop in CO2 concentration in leaf air spaces c. an exposure to red light d. a drop in O2 concentration in leaf air spaces