What is the most effective contraceptive approach of those listed?
a. withdrawal
b. abstinence
c. condom
d. intrauterine device
e. rhythm method
b
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Explain the basis for how the three groups of macroalgae are divided, and name the main pigment(s) characteristic to each group
What will be an ideal response?
In a prokaryotic cell, the DNA can be found where?
a. nucleoid b. nuclear membrane c. nucleus d. chromatin
Mendel’s study of genetics differed from studies of
his contemporaries’ because he a. used only pure-breeding parents. b. examined several different traits at the same time. c. kept careful records and analyzed the data statistically. d. worked on plants rather than animals. e. confirmed the blending theory of inheritance.
The fundamental idea behind parsimony is:
a. that the best phylogeny is the one that both explains the observed character data and posits the fewest evolutionary changes. b. to provide a second approach to inferring phylogenetic relationships. c. to compute the number of morphological or molecular differences between two or more species or populations. d. the aim to specifically reconstruct evolutionary trees.