Which of the following is true of both first- and second-division nondisjunction? (Choose all that apply)
A. Gametes are produced with extra
chromosomes
B. Gametes are produced with missing
chromosomes
C. Sister chromatids fail to separate
D. Homologous chromosomes fail to separate
E. Half of the gametes produced are wildtype,
while half are mutated
A,B
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A) weaponized B) virulized C) category A D) infectious
Land plants are believed to have evolved from
(a) mosses. (b) ferns. (c) charophytes. (d) fungi.
Future kidney cells and heart cells can differentiate into their respective specialized cell types because
A. they express a different set of genes during development B. they possess different genes C. they arise from different embryonic stem cells D. they utilize different transcription factors E. they express different genes and utilize different transcription factors during development
A change in a cell's DNA sequence is
A. translation. B. a mutation. C. replication. D. transcription. E. an operon.