Which of the following results when homologous chromosomes cross over in meiosis?  

Which of the following relationships among alleles of a single gene best explains the observation that a single change in the gene encoding α-keratin results in chickens with frizzled feathers, increased food consumption, higher heart rate and delayed sexual maturity?  

During which of the following processes does independent assortment of chromosomes occur?  

Which of the following statements correctly explains the fact that all seven of the pea plant traits studied by Mendel obeyed the principle of independent assortment?  

Hershey and Chase set out to determine which type of molecule is used for genetic inheritance. They completed a series of experiments where E. coli was infected by a T2 virus. Which molecular component of the T2 virus ended up inside the cell?  

Approximately how many molecules of ATP are produced from the complete oxidation of one molecule of glucose (C6H12O6) in aerobic cellular respiration?  

Most CO2 from catabolism is released during ________.  

Which of the following statements best describes the electron transport chain?  

In which phase of mitosis do the sister chromatids become daughter chromosomes?  

Which of the following cellular events occur in the G1 phase of the cell division cycle?