BIO EXAM 3 QUESTIONS AND WITH
VERIFIED ANSWERS GRADE A+
Seperation of the homologous chromosomes during anaphase I would
be most affected by a drug that prevents
A. cell wall formation.
B. lengthening of microtubules.
C. formation of a cleavage formation
D. shortening of microtubules. - ANSWER - D. shortening of
microtubules
, Which of these statements is false?
A. At sexual maturity, ovaries and testes produce diploid gametes by
meiosis.
B. Single, haploid (n) sets of chromosomes in ovum and sperm unite
during fertilization, forming a diploid (2n), single-celled zygote.
C. In humans, each of the 22 maternal autosomes has a homologous
paternal chromosome.
D. In humans, the 23rd pair, the sex chromosomes, determines whether
the person is female (XX) or male (XY). - ANSWER - A. At sexual
maturity, ovaries and testes produce diploid gametes by meiosis
The two homologous chromosomes pair along their length early in
meiosis I. During this physical joining, genetic exchange occurs between
them producing recombinant chromosomes in a process called
_________.
A. synapsis
B. crossing over
C. nondisjunction
D. translocation - ANSWER - B. crossing over
_________ is the portion of the cell cycle in which the chromosomes
are invisible under the light microscope because they are not yet
condensed
A. Interphase
VERIFIED ANSWERS GRADE A+
Seperation of the homologous chromosomes during anaphase I would
be most affected by a drug that prevents
A. cell wall formation.
B. lengthening of microtubules.
C. formation of a cleavage formation
D. shortening of microtubules. - ANSWER - D. shortening of
microtubules
, Which of these statements is false?
A. At sexual maturity, ovaries and testes produce diploid gametes by
meiosis.
B. Single, haploid (n) sets of chromosomes in ovum and sperm unite
during fertilization, forming a diploid (2n), single-celled zygote.
C. In humans, each of the 22 maternal autosomes has a homologous
paternal chromosome.
D. In humans, the 23rd pair, the sex chromosomes, determines whether
the person is female (XX) or male (XY). - ANSWER - A. At sexual
maturity, ovaries and testes produce diploid gametes by meiosis
The two homologous chromosomes pair along their length early in
meiosis I. During this physical joining, genetic exchange occurs between
them producing recombinant chromosomes in a process called
_________.
A. synapsis
B. crossing over
C. nondisjunction
D. translocation - ANSWER - B. crossing over
_________ is the portion of the cell cycle in which the chromosomes
are invisible under the light microscope because they are not yet
condensed
A. Interphase
