BSC 1010C - Exam 3 Study Guide (Ch. 12-16) Questions
With Complete Solutions
(T/F) All allele combinations of genes are equally likely to
occur. Correct Answers True
(T/F) An individual can only have two alleles, but more than
two may exist in a population. Correct Answers True
(T/F) Basis of the law of independent assortment is independent
assortment of homologous chromosomes in meiosis. Correct
Answers True
(T/F) Crossing F1 did NOT produce the 2 traits seen in the P
generation in a ratio of ~3:1. Correct Answers False
(T/F) Daughter cells of each embryonic cell have the same
inactive X. Correct Answers True
(T/F) Different cell types divide at different rates. Correct
Answers True
(T/F) Dominance may be expressed at different levels of
organization (ex. could be expressed at molecular level but not
organismal level). Correct Answers True
(T/F) Dominant means more frequent. Correct Answers False
(T/F) Genes exist as parts of chromosomes. Correct Answers
True
,(T/F) Linear ends can't be replicated. Correct Answers True
(T/F) Meiosis II is nearly identical to mitosis. Correct Answers
True
(T/F) Most sex-linked genes in humans are X-linked. Correct
Answers True
(T/F) Proteins in DNA replication are one large complex rather
than separate units. Correct Answers True
(T/F) The law of independent assortment is applied to genes on
different chromosomes or genes that are very far apart on the
same chromosome. Correct Answers True
(T/F) There are many Y-linked genes in humans. Correct
Answers False
(T/F) True bred P generation (2 distinct traits) produced F1
generation all expressing the same trait (dominant). Correct
Answers True
Are gametes diploid or haploid? Correct Answers haploid
Are somatic cells diploid or haploid? Correct Answers diploid
Does chromosome number relate to the complexity of the
genome? Correct Answers no
, Female mammals have almost all of one X chromosome become
inactivated. What does it condense to form? Correct Answers
Barr body
Genetic material thought to most likely be DNA or protein. Why
was protein the leading candidate over DNA? Correct Answers
protein was viewed as a better candidate by many, not many
were convinced bacterial genes and those in more complex
organisms would be similar in composition and function, very
little known about DNA
How can the environment impact phenotype particularly in
polygenic characters? Correct Answers nutrition, sun and wind
exposure, soil pH, etc
How do chromosomes become damaged or their number
altered? Correct Answers physical and chemical disturbances or
errors during meiosis
How do we study genetics and inheritance in humans? Correct
Answers studying matings that have already occurred through
pedigrees
How many chromosomes are there in gametes? Correct Answers
1 set
How many chromosomes are there in somatic cells? Correct
Answers 2 sets
How many chromosomes do humans have in total? Correct
Answers 46 (23 pairs, 1 set from each parent)
With Complete Solutions
(T/F) All allele combinations of genes are equally likely to
occur. Correct Answers True
(T/F) An individual can only have two alleles, but more than
two may exist in a population. Correct Answers True
(T/F) Basis of the law of independent assortment is independent
assortment of homologous chromosomes in meiosis. Correct
Answers True
(T/F) Crossing F1 did NOT produce the 2 traits seen in the P
generation in a ratio of ~3:1. Correct Answers False
(T/F) Daughter cells of each embryonic cell have the same
inactive X. Correct Answers True
(T/F) Different cell types divide at different rates. Correct
Answers True
(T/F) Dominance may be expressed at different levels of
organization (ex. could be expressed at molecular level but not
organismal level). Correct Answers True
(T/F) Dominant means more frequent. Correct Answers False
(T/F) Genes exist as parts of chromosomes. Correct Answers
True
,(T/F) Linear ends can't be replicated. Correct Answers True
(T/F) Meiosis II is nearly identical to mitosis. Correct Answers
True
(T/F) Most sex-linked genes in humans are X-linked. Correct
Answers True
(T/F) Proteins in DNA replication are one large complex rather
than separate units. Correct Answers True
(T/F) The law of independent assortment is applied to genes on
different chromosomes or genes that are very far apart on the
same chromosome. Correct Answers True
(T/F) There are many Y-linked genes in humans. Correct
Answers False
(T/F) True bred P generation (2 distinct traits) produced F1
generation all expressing the same trait (dominant). Correct
Answers True
Are gametes diploid or haploid? Correct Answers haploid
Are somatic cells diploid or haploid? Correct Answers diploid
Does chromosome number relate to the complexity of the
genome? Correct Answers no
, Female mammals have almost all of one X chromosome become
inactivated. What does it condense to form? Correct Answers
Barr body
Genetic material thought to most likely be DNA or protein. Why
was protein the leading candidate over DNA? Correct Answers
protein was viewed as a better candidate by many, not many
were convinced bacterial genes and those in more complex
organisms would be similar in composition and function, very
little known about DNA
How can the environment impact phenotype particularly in
polygenic characters? Correct Answers nutrition, sun and wind
exposure, soil pH, etc
How do chromosomes become damaged or their number
altered? Correct Answers physical and chemical disturbances or
errors during meiosis
How do we study genetics and inheritance in humans? Correct
Answers studying matings that have already occurred through
pedigrees
How many chromosomes are there in gametes? Correct Answers
1 set
How many chromosomes are there in somatic cells? Correct
Answers 2 sets
How many chromosomes do humans have in total? Correct
Answers 46 (23 pairs, 1 set from each parent)
