BIO 101 - Exam 3 comprehensive
Questions and Answers with Verified
Solutions
Question 1:
If an organism is diploid and a certain gene found in the organism has 18
known alleles (variants), then any given organism of that species
can/must have which of the following?
Answer:
at most, 2 alleles for that gene
Question 2:
Refer to the life cycles illustrated in Figure 10.1. Which of the life cycles is
(are) typical for most fungi and some protists?
Answer:
II Only
Question 3:
Which of the following describes a karyotype?
Answer:
organized images of a cell's chromosomes
Question 4:
Refer to the drawings in Figure 10.2 of a single pair of homologous
chromosomes as they might appear during various stages of either
mitosis or meiosis. Which diagram represents anaphase I of meiosis?
,Answer:
I
Question 5:
During mitosis or meiosis, sister chromatids are held together by proteins
referred to as cohesins. Such molecules must have which of the following
properties?
Answer:
They must be removed before sister chromatids or homologous
chromosomes can separate
Question 6:
Independent assortment of chromosomes during meiosis is a result of
Answer:
the random and independent way in which each pair of homologous
chromosomes lines up at the metaphase plate during meiosis I
Question 7:
What do we mean when we use the term monohybrid cross?
Answer:
a monohybrid cross involves organisms that are heterozygous for one
character
, Question 8:
The fact that all seven of the pea plant traits studied by Mendel obeyed
the principle of independent assortment most probably indicates which of
the following?
Answer:
All of the genes controlling the traits behaved as if they were located on
different chromosomes
Question 9:
Hydrangea plants of the same genotype are planted in a large flower
garden. Some of the plants produce blue flowers and others produce pink
flowers. This can be best explained by which of the following statements?
Answer:
Environmental factors such as soil pH affect phenotype
Question 10:
What is the genotype of individual II-5? Please use the following
information to answer the question(s). Figure 11.2 shows a pedigree
chart for a family, some of whose members exhibit the dominant trait, W.
Affected individuals are indicated by a dark square or circle.
Answer:
ww
Questions and Answers with Verified
Solutions
Question 1:
If an organism is diploid and a certain gene found in the organism has 18
known alleles (variants), then any given organism of that species
can/must have which of the following?
Answer:
at most, 2 alleles for that gene
Question 2:
Refer to the life cycles illustrated in Figure 10.1. Which of the life cycles is
(are) typical for most fungi and some protists?
Answer:
II Only
Question 3:
Which of the following describes a karyotype?
Answer:
organized images of a cell's chromosomes
Question 4:
Refer to the drawings in Figure 10.2 of a single pair of homologous
chromosomes as they might appear during various stages of either
mitosis or meiosis. Which diagram represents anaphase I of meiosis?
,Answer:
I
Question 5:
During mitosis or meiosis, sister chromatids are held together by proteins
referred to as cohesins. Such molecules must have which of the following
properties?
Answer:
They must be removed before sister chromatids or homologous
chromosomes can separate
Question 6:
Independent assortment of chromosomes during meiosis is a result of
Answer:
the random and independent way in which each pair of homologous
chromosomes lines up at the metaphase plate during meiosis I
Question 7:
What do we mean when we use the term monohybrid cross?
Answer:
a monohybrid cross involves organisms that are heterozygous for one
character
, Question 8:
The fact that all seven of the pea plant traits studied by Mendel obeyed
the principle of independent assortment most probably indicates which of
the following?
Answer:
All of the genes controlling the traits behaved as if they were located on
different chromosomes
Question 9:
Hydrangea plants of the same genotype are planted in a large flower
garden. Some of the plants produce blue flowers and others produce pink
flowers. This can be best explained by which of the following statements?
Answer:
Environmental factors such as soil pH affect phenotype
Question 10:
What is the genotype of individual II-5? Please use the following
information to answer the question(s). Figure 11.2 shows a pedigree
chart for a family, some of whose members exhibit the dominant trait, W.
Affected individuals are indicated by a dark square or circle.
Answer:
ww
