BIO 1406 Exam 3 Questions with Correct Answers Latest Update 2025
What do retroviruses like HIV do? - Answers integrates its viral DNA into the DNA of the host cell, which
allows the retrovirus to replicate
If a somatic cell of an organism contains 26 chromosomes, then a gamete contains_________
chromosomes. - Answers 13
What are the functions of mitosis in humans? - Answers Repair of wounds, growth, replacement of lost
or damaged cells
Why is it difficult to observe individual chromosomes during interphase? - Answers they have uncoiled
to form long, thin strands
If a somatic cell contains 8 chromosomes, there are ____ different variations ofchromosomes are
possible in its gametes. - Answers 16
Deletion - Answers (1) A deficiency in a chromosome resulting from the loss of a fragment through
breakage. (2) A mutational loss of one or more nucleotide pairs from a gene.
Inversion - Answers occurs when a segment breaks off and reattaches within the same chromosome, but
in reverse orientation
Translocation - Answers The process in which a segment of a chromosome breaks off and attaches to
another chromosome.
nonjisdunction - Answers the failure of one or more pairs of homologous chromosomes or sister
chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of
chromosomes in the daughter nuclei.
Which phase of mitosis is essentially the opposite of prophase in terms of changes
within the nucleus? - Answers telophase
What phase of the cell cycle would you see that DNA has been doubled? - Answers interphase (s phase)
What is binary fission and how is it different from mitosis? - Answers binary fission is the asexual
reproduction of prokaryotic cells and mitosis occurs in eukaryotic cells binary fission is simpler faster
process than mitosis
Where in mitosis are microfilaments important - Answers cleavage furrow
Why is trisomy 21 more common than other chromosomal disorders? - Answers the least lethal the
offspring is most likely to survive
What determines whether an allele is dominant or recessive? - Answers the trait linked to a parent's
sex-genes
What do retroviruses like HIV do? - Answers integrates its viral DNA into the DNA of the host cell, which
allows the retrovirus to replicate
If a somatic cell of an organism contains 26 chromosomes, then a gamete contains_________
chromosomes. - Answers 13
What are the functions of mitosis in humans? - Answers Repair of wounds, growth, replacement of lost
or damaged cells
Why is it difficult to observe individual chromosomes during interphase? - Answers they have uncoiled
to form long, thin strands
If a somatic cell contains 8 chromosomes, there are ____ different variations ofchromosomes are
possible in its gametes. - Answers 16
Deletion - Answers (1) A deficiency in a chromosome resulting from the loss of a fragment through
breakage. (2) A mutational loss of one or more nucleotide pairs from a gene.
Inversion - Answers occurs when a segment breaks off and reattaches within the same chromosome, but
in reverse orientation
Translocation - Answers The process in which a segment of a chromosome breaks off and attaches to
another chromosome.
nonjisdunction - Answers the failure of one or more pairs of homologous chromosomes or sister
chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of
chromosomes in the daughter nuclei.
Which phase of mitosis is essentially the opposite of prophase in terms of changes
within the nucleus? - Answers telophase
What phase of the cell cycle would you see that DNA has been doubled? - Answers interphase (s phase)
What is binary fission and how is it different from mitosis? - Answers binary fission is the asexual
reproduction of prokaryotic cells and mitosis occurs in eukaryotic cells binary fission is simpler faster
process than mitosis
Where in mitosis are microfilaments important - Answers cleavage furrow
Why is trisomy 21 more common than other chromosomal disorders? - Answers the least lethal the
offspring is most likely to survive
What determines whether an allele is dominant or recessive? - Answers the trait linked to a parent's
sex-genes
