Answer the following statements true (T) or false (F)
1. If a cell contains 20 chromosomes in G1, it will contain 40 chromosomes at the end of S.
2. During prometaphase, the sister chromatids organize into a single row in the center of the cell.
3. A cell undergoing meiosis that contains sister chromatids may be either haploid or diploid.
4. One major difference between metaphase I and metaphase II is the presence or absence of bivalents.
1. FALSE
2. FALSE
3. TRUE
4. TRUE
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Select the correct meaning for the following pedigree symbol.
A) Unaffected male
B) Unaffected female
C) Mating
D) Affected male
E) Affected female
A human karyotype showing 22 pairs of autosomes and two X chromosomes would be
a. a normal male. b. a normal female. c. an abnormal male. d. an abnormal female. e. a human whose sex cannot be determined.
A peptide bond
A) is a covalent bond between the carboxyl carbon of one amino acid and the amino nitrogen of a second amino acid. B) is a covalent bond between the functional R groups of adjacent amino acids. C) is a covalent bond between the NH group of one polypeptide and the CO group of an adjacent polypeptide that holds together multimeric proteins. D) is a noncovalent bond that dictates the tertiary structure of a protein. E) is a covalent bond between adjacent glucose molecules in a peptide.
A person with the genotype GD/g for the galactosemia gene would have ____________________ of
the normal level of galactose-1-phosphate uridyl transferase. Fill in the blank(s) with the appropriate word(s).