When does a chromosome go from one chromatid to two sister chromatids?
A. during the G1 phase of interphase
B. during the G2 phase of interphase
C. during the S phase of interphase
D. during mitosis
E. during cytokinesis
Answer: C
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Only nine types of aneuploids are known in newborns because
A) only nine chromosomes undergo nondisjunction. B) most types of aneuploids are lethal early in development. C) most aneuploids do not cause detectable defects. D) most aneuploids do not affect the phenotype.
what does clonal de-selection (deletion) do?
What will be an ideal response?
Identify the reactants in the following chemical reaction: C10H8 + 12 O2 ? 10 CO2 + 4 H2O
A) C10H8 and 10 CO2 B) 12 O2 and 4 H2O C) C10H8 and 12 O2 D) 10 CO2 and 4 H2O
What is the energy source used to drive ATP synthase to produce ATP?
A) electrons flowing through the electron transport chain B) acetyl CoA coming across the mitochondrial inner membrane C) glucose coming across the mitochondrial inner membrane D) NADH coming across the mitochondrial inner membrane E) H+ ions flowing across the mitochondrial inner membrane