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BIO 156 RIO EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS 100% CORRECT | UPDATED 2025
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BIO 156 RIO EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS 100% CORRECT | UPDATED 2025
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BIO 156 RIO EXAM 2 QUESTIONS ANDANSWERS WITH COMPLETE SOLUTIONS
100% CORRECT | UPDATED 2025
Interphase is the stage when __________. - ANSWER a cell grows and
duplicates its DNA.
In an individual with a dominant phenotype is crossed with an individual with a
recessive phenotype, 4 of their 9 offspring show the recessive phenotype. What is
the genotype of the first parent? - ANSWER Bb
Solve this monohybrid genetics problem: Black hair is governed by the dominant
gene (B) and blond hair is determined by the recessive gene (b). In this
monohybrid cross, if both parents are heterozygous, what percentage of the
offspring would be expected to have blond hair? - ANSWER 25%
A Punnett square can be used to determine___________. - ANSWER the
genotype of an offspring
Different alleles of the same gene are found - ANSWER at the same place on
homologous chromosomes
If a parental cell has 14 chromosomes prior to mitosis, how many chromosomes
will each daughter cell have? - ANSWER 14 because the chromatids separate
a duplicated chromosome has _____ chromatid(s) - ANSWER 2
, Mendel was fortunate to work out the laws of segregation and independent
assortment because he used an organism that reproduced quickly and in which
the traits were discrete (easy to observe). Mendel's organism of choice was the -
ANSWER pea plant
What is the importance of crossing-over? - ANSWER It increases the likelihood
that daughter cells contain different genetic material.
Assuming that the probability of having a female child is 50% and the probability
of having a male child is also 50%, what is the probability that a couple's firstborn
child is female and second-born child is male? - ANSWER 25%
If a parental cell has 12 chromosomes, then each of the daughter cells following
meiosis will have _____. - ANSWER 6 chromosomes.
Which of the following genotypes would be homozygous dominant for both
alleles? - ANSWER DDEE
Which sequence of stages in mitosis is correct? - ANSWER prophase,
prometaphase, metaphase, anaphase, telophase
During which stage of meiosis does crossing-over occur? - ANSWER prophase I
Which occurs in anaphase? - ANSWER Chromosomes move to opposite poles.
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