Which of the following is true about a karyotype?
A) homologous chromosomes are arranged in pairs
B) sex chromosomes are identified separately from autosomes
C) chromosome pairs are assorted by both size and shape
D) banding patterns are used in pairing chromosomes
E) All of the answer choices are true about karyotypes.
Answer: E) All of the answer choices are true about karyotypes.
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Fill in the blank(s) with the appropriate word(s).
Mendel's dihybrid crosses, but not his
monohybrid crosses, show that a. some genes are linked together. b. the two alleles controlling a trait are divided equally among the gametes. c. alleles for different traits are inherited independently. d. one of the pair of alleles is dominant to the other. e. the crossing of two different homozygous forms will not produce any offspring in the first generation that will look like either of the parents.
Insufficient production of growth hormone by the anterior pituitary may result in
A) diabetes insipidus. B) a drop in blood glucose levels. C) acromegaly. D) dwarfism. E) gigantism.
The lac operon of E. coli is ________ when the repressor is bound to ________
A) active; lactose B) inactive; lactose C) active; tryptophan D) inactive; tryptophan