Homologous chromosomes have which of the following?
a. the same genes at the same locus
b. the same genes at different loci
c. different genes at the same locus
d. different genes at different loci
a. the same genes at the same locus
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The synthesis and secretion of ____ is ultimately regulated by gonadotropin-releasing hormone from the ____
a. estrogen; posterior pituitary b. estrogen; ovaries
c. testosterone; hypothalamus d. testosterone; testes e. androgens; gonads
A scientist is studying a relationship in which one species hunts and eats the other as food. Which type of relationship is the scientist studying?
a) commensalism b) parasitism c) predation d) mutualism
Which is a description of a fungating tumor?
a. Open, exposed surface tumor b. Containing dead tissue c. Characterized by inflammation d. Large, soft, flesh tumor e. Mushrooming pattern of growth as tumor cells pile on top of each other
Why is potassium deficiency in plants most common on light, sandy soils?
A. plants grown in sandy soil don't require potassium B. potassium ions are too tightly bound to sand particles to be used by plants C. roots grown in sandy soil can't absorb potassium D. percolation of water through sandy soils leaches potassium from the soil