CSU LIFE 102 QUESTION BANK 2026
INTRODUCTORY LIFE SCIENCE REVIEW
UPDATED A+
◉ Diploid cells undergo either mitosis or meiosis. Haploid cells
cannot undergo meiosis, why?
Answer: they lack homologous chromosome pairs
◉ Homologous chromosomes _______
Answer: are identical & carry information for the same traits (2nd
part = better answer)
◉ independent assortment of chromosomes happens during
__________
Answer: meiosis 1 only
◉ when does transition from diploid to haploid happen in gamete
formation?
Answer: Telophase and cytokenesis of meiosis 1
◉ what was the most significant conclusion that Gregor Mendel
drew from his expiriments w pea plants?
, Answer: traits are inherited in discrete units and are not the result
of blending
◉ Mendel accounted for the observation that traits that had
dissapeared in the F1 generation reappeared in the F2 gen. by
proposing that ___________
Answer: traits can be dominant or recessive, and the recessive traits
were obscured by the dominant ones in the F1
◉ In certain plants, tall is dominant to short. If heterozygous plant is
crossed w a homozygous tall plant, what is the probability that the
offspring will be short?
Answer: 0
◉ What were some of the important features of Mendel's
expirimental design and the process that resulted in the success of
his work?
Answer: Pea plants are excellent model organisms & he made careful
choices about the expiriment, took large amounts of data, and
crossed the F2 gen.
◉ Which describes the ability of a single allele to have multiple
phenotypic effects? (ex: seed color)
Answer: Pleiotropy
INTRODUCTORY LIFE SCIENCE REVIEW
UPDATED A+
◉ Diploid cells undergo either mitosis or meiosis. Haploid cells
cannot undergo meiosis, why?
Answer: they lack homologous chromosome pairs
◉ Homologous chromosomes _______
Answer: are identical & carry information for the same traits (2nd
part = better answer)
◉ independent assortment of chromosomes happens during
__________
Answer: meiosis 1 only
◉ when does transition from diploid to haploid happen in gamete
formation?
Answer: Telophase and cytokenesis of meiosis 1
◉ what was the most significant conclusion that Gregor Mendel
drew from his expiriments w pea plants?
, Answer: traits are inherited in discrete units and are not the result
of blending
◉ Mendel accounted for the observation that traits that had
dissapeared in the F1 generation reappeared in the F2 gen. by
proposing that ___________
Answer: traits can be dominant or recessive, and the recessive traits
were obscured by the dominant ones in the F1
◉ In certain plants, tall is dominant to short. If heterozygous plant is
crossed w a homozygous tall plant, what is the probability that the
offspring will be short?
Answer: 0
◉ What were some of the important features of Mendel's
expirimental design and the process that resulted in the success of
his work?
Answer: Pea plants are excellent model organisms & he made careful
choices about the expiriment, took large amounts of data, and
crossed the F2 gen.
◉ Which describes the ability of a single allele to have multiple
phenotypic effects? (ex: seed color)
Answer: Pleiotropy
