BIOL 133 CHAPTER 11 | COMPREHENSIVE BIOLOGY STUDY GUIDE, PRACTICE
QUESTIONS & ANSWERS 2026/2027
What is an advantage of asexual reproduction? Select all that apply. - ANS ✔✔It occurs quickly
populates areas rapidly
only need one parent
Meiosis and sexual reproduction increase diversity because - ANS ✔✔They will almost always have
different offspring arise
How does metaphase in meiosis I and meiosis II differ? - ANS ✔✔Homologous chromosomes line up in
meiosis I and duplicated chromosomes line up in meiosis II.
A newly-discovered butterfly species has a chromosome number of n=7. Match the total number of
chromosomes in each type of cell.
A. 7
B. 14 - ANS ✔✔Gamete = 7
Zygote = 14
Most organisms on earth spend large amounts of energy reproducing sexually, instead of using a more
efficient method of asexual reproduction. Finding and competing for mates, meiosis and gamete
production, and the complexities of fertilization could all be avoided if asexual reproduction was
sufficient.
Why isn't it? - ANS ✔✔Genetic variability is of paramount importance so that organisms can compete
and evolve; individuals with the benefit of genetic variability tend to have a selective advantage.
A nuclear envelope usually first reforms around each set of chromosomes in the haploid daughter cells
during _________. - ANS ✔✔Telophase I
Which describes the relationship between gametes and spores? - ANS ✔✔Gametes can fuse to become
a zygote, but spores can develop into organisms without forming a zygote
Which event is similar between prophase I and prophase? Select all that apply. - ANS ✔✔The nuclear
membrane begins to disintegrate
Spindle fibers appear
Each chromosome is composed of two chromatids
Chromosomes condense
A few organisms have evolved to use mostly asexual reproduction. What must be true about these? -
ANS ✔✔They are well-adapted to their environment.
A large family has a history of multiple aneuploid diseases such as Down Syndrome, trisomy-18 and
Klinefelter Syndrome (XXY). The propensity to defects seems to be inherited, but the gene responsible is
unknown.What types of candidate genes would be most likely to lead to aneuploidy if they were
mutated? - ANS ✔✔Genes that encode proteins involved in chiasma formation.
QUESTIONS & ANSWERS 2026/2027
What is an advantage of asexual reproduction? Select all that apply. - ANS ✔✔It occurs quickly
populates areas rapidly
only need one parent
Meiosis and sexual reproduction increase diversity because - ANS ✔✔They will almost always have
different offspring arise
How does metaphase in meiosis I and meiosis II differ? - ANS ✔✔Homologous chromosomes line up in
meiosis I and duplicated chromosomes line up in meiosis II.
A newly-discovered butterfly species has a chromosome number of n=7. Match the total number of
chromosomes in each type of cell.
A. 7
B. 14 - ANS ✔✔Gamete = 7
Zygote = 14
Most organisms on earth spend large amounts of energy reproducing sexually, instead of using a more
efficient method of asexual reproduction. Finding and competing for mates, meiosis and gamete
production, and the complexities of fertilization could all be avoided if asexual reproduction was
sufficient.
Why isn't it? - ANS ✔✔Genetic variability is of paramount importance so that organisms can compete
and evolve; individuals with the benefit of genetic variability tend to have a selective advantage.
A nuclear envelope usually first reforms around each set of chromosomes in the haploid daughter cells
during _________. - ANS ✔✔Telophase I
Which describes the relationship between gametes and spores? - ANS ✔✔Gametes can fuse to become
a zygote, but spores can develop into organisms without forming a zygote
Which event is similar between prophase I and prophase? Select all that apply. - ANS ✔✔The nuclear
membrane begins to disintegrate
Spindle fibers appear
Each chromosome is composed of two chromatids
Chromosomes condense
A few organisms have evolved to use mostly asexual reproduction. What must be true about these? -
ANS ✔✔They are well-adapted to their environment.
A large family has a history of multiple aneuploid diseases such as Down Syndrome, trisomy-18 and
Klinefelter Syndrome (XXY). The propensity to defects seems to be inherited, but the gene responsible is
unknown.What types of candidate genes would be most likely to lead to aneuploidy if they were
mutated? - ANS ✔✔Genes that encode proteins involved in chiasma formation.
