Anaphase
a. involves the lining up of the chromosomes across the equatorial plate.
b. is the same in mitosis and meiosis I and II.
c. is initiated when the newly divided centromeres begin to move apart.
d. results in an unequal distribution of chromosomes to the resulting cells.
e. does not occur in meiosis II.
C
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Figure 23.2 in your text represents a phylogenetic tree of the vertebrate animals. According to this tree, what is the sister group to the tetrapods?
A. sauropsids B. mammals C. lungfish D. amphibians E. coelacanths Answer Point Value: 1.0 points Answer Key: C 5 Reference: Ref 23-1 According to Figure 23.2 in your text, what is the sister group to mammals? A. sauropsids B. tetrapods C. birds D. crocodiles and alligators E. birds plus crocodiles and alligators
From his experiments, Mendel concluded that each individual carries two factors, or ____, that govern the inheritance of each trait. Different versions of each factor are known as ____
a. alleles; gene markers b. genes; loci c. alleles; genes d. genes; alleles e. gene markers; genes
The spindle apparatus is composed of
a. Golgi bodies. b. microtubules. c. endoplasmic reticulum. d. nucleoprotein. e. chromatids.
In The Origin of Species, Darwin argued that the mechanism of descent with modification was ________
A) artificial selection B) natural selection C) inheritance of acquired characteristics D) uniformitarianism