GENETICS EXAM 1 REVIEWED
QUESTIONS AND CORRECT ANSWERS
Which of the following DNA molecules is identical to
this one?
3'-TACGGTAA-5'
3'-TACGGTAA-5'
Which of the following DNA molecules would bond
(complimentary) with the one shown here:
5'-GGGATCGGG-3'
5'-CCCGATCCC-3'
How many hydrogen bonds hold these two DNA
strands together?
5'-GAATTAAA-3'
3'-CTTAATTT-5'
17
What holds deoxyribonucleotides together to form a
single-stranded DNA molecule?
covalent bonds between sugar and phosphate
T/F: Sister chromatids are formed when the DNA of a
chromosome replicates.
True
T/F: The centromere is always in the middle of a
chromosome.
False
, Kinetochores are attached to ________.
the centromere
the telomere
the acromere
the allele
the centromere
T/F: Non-homologous chromosomes contain different
versions of the same genes.
False
T/F: Sex chromosome pairs look different in one of the
sexes whereas autosomal chromosome pairs look the
same in both sexes.
True
Which of the following entities can be homologous?
chromosomes
Cell #1 is homozygous for genes R and B, and cell #2
is homozygous for gene Q but heterozygous for gene
T.
True
The genotype for this cell is TQ/Tq. [Note: a backslash
indicates genes or alleles on homologous
chromosomes whereas a semicolon indicates genes
on non-homologous chromosomes.]
False
Which of the following entities can be diploid? (there
may be more than one correct answer)
a cell and a person
Which of the following entities can be homozygous?
(there may be more than one correct answer)
person and a cat
Genetics?
QUESTIONS AND CORRECT ANSWERS
Which of the following DNA molecules is identical to
this one?
3'-TACGGTAA-5'
3'-TACGGTAA-5'
Which of the following DNA molecules would bond
(complimentary) with the one shown here:
5'-GGGATCGGG-3'
5'-CCCGATCCC-3'
How many hydrogen bonds hold these two DNA
strands together?
5'-GAATTAAA-3'
3'-CTTAATTT-5'
17
What holds deoxyribonucleotides together to form a
single-stranded DNA molecule?
covalent bonds between sugar and phosphate
T/F: Sister chromatids are formed when the DNA of a
chromosome replicates.
True
T/F: The centromere is always in the middle of a
chromosome.
False
, Kinetochores are attached to ________.
the centromere
the telomere
the acromere
the allele
the centromere
T/F: Non-homologous chromosomes contain different
versions of the same genes.
False
T/F: Sex chromosome pairs look different in one of the
sexes whereas autosomal chromosome pairs look the
same in both sexes.
True
Which of the following entities can be homologous?
chromosomes
Cell #1 is homozygous for genes R and B, and cell #2
is homozygous for gene Q but heterozygous for gene
T.
True
The genotype for this cell is TQ/Tq. [Note: a backslash
indicates genes or alleles on homologous
chromosomes whereas a semicolon indicates genes
on non-homologous chromosomes.]
False
Which of the following entities can be diploid? (there
may be more than one correct answer)
a cell and a person
Which of the following entities can be homozygous?
(there may be more than one correct answer)
person and a cat
Genetics?
