The main purpose of genetic screening is to
A.) look for the genes that cause every kind of cancer.
B.) assess the risk of having or carrying a genetic disorder.
C.) prevent carriers from ever passing on genetic disorders.
D.) identify every possible genetic defect in a given person.
Ans: B.) assess the risk of having or carrying a genetic disorder.
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One mole of a substance contains 6.02 x 1023 molecules. The atomic number of Li is 3 and the atomic mass is approximately 7 . If you have three moles of Li, how many grams does it weigh?
A. 9 B. 21 C. 7 x 6.02 x 1023 D. 3 x 6.02 x 1023
Nondisjunction in the sex chromosomes is more severe than in the autosomes
A. true B. false
Shared derived traits are found in all members of the ingroup of a clade.
a. true b. false
To find the nucleotide sequence of human chromosomes, chromosomes had to be digested into small fragments and then ________
A) centrifuged and electrophoresed B) fingerprinted C) cloned and sequenced D) restricted