Biology 1001 Final LSUE QUESTIONS WITH ANSWERS RATED
A+
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 first-born child will be female and
that their second-born child will be male? - 25%
The chromosome theory of inheritance states that - the behavior of chromosomes during meiosis
and fertilization accounts for patterns of inheritance.
All the offspring of a cross between a red-flowered plant and a white-flowered plant have pink
flowers. This means that the allele for red flowers is ________ to the allele for white flowers. -
incomplete dominance
Any gene located on a sex chromosome - is called a sex-linked gene
Female inheritance patterns cannot be analyzed by simply studying the X chromosome because -
the X chromosome is obtained from both father and mother.
Mendel conducted his most memorable experiments on - peas
Which of the following statements regarding hypotheses about inheritance is false - The blending
hypothesis suggests that all of the traits of the offspring come from either the mother or the
father.
Most genetic disorders of humans are caused by - recessive alleles
The individual features of all organisms are the result of - genetics and environment
Which of the following statements best explains why dominant alleles that cause lethal disorders
are less common than recessive alleles that cause lethal disorders? - Most individuals carrying a
lethal dominant allele have the disorder and die before they reproduce, whereas individuals
carrying a lethal recessive allele are more likely to be healthy and reproduce.
Which of the following enzymes catalyzes the linking together of RNA nucleotides to form
RNA? - RNA polymerase
Conjugation between a bacterium that lacks an F factor (F-) and a bacterium that has an F factor
on its chromosome (F+) could produce which of the following results? - The F- bacterium ends
up with a recombinant chromosome that carries some genes from the F+ bacterium, and the F+
bacterium ends up with an unaltered chromosome.
Which of the following options most accurately lists the sequence of events in translation? -
codon recognition → peptide bond formation → translocation → termination
, The transfer of genetic information from DNA to RNA is called - transcription
Experiments have demonstrated that the "words" of the genetic code (the units that specify
amino acids) are - three-nucleotide sequences
What nucleotide sequence would be found on the partner DNA strand of the ACTGT strand? -
TGACA
Any change in the nucleotide sequence of DNA is called - mutation
Which of the following statements regarding a DNA double helix is always true? - The amount
of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount
of cytosine.
The 2009 H1N1 flu virus - evolved through the genetic reshuffling of viruses that infect humans,
birds, and pigs.
DNA replication - uses each strand of a DNA molecule as a template for the creation of a new
strand
Which of the following options best depicts the flow of information when a gene directs the
synthesis of a cellular component? - DNA -> RNA -> Protein
In populations of the greater prairie chicken in Illinois, genetic diversity was - lost through
genetic drift and restored by gene flow.
Who developed a theory of evolution almost identical to Darwin's? - Wallace
The ultimate source of all new alleles is - mutation
Thirty people are selected for a long-term mission to colonize a planet many light years away
from Earth. The mission is successful and the population rapidly grows to several hundred
individuals. However, certain genetic diseases are unusually common in this group, and their
gene pool is quite different from that of the Earth population they have left behind. Which of the
following phenomena has left its mark on this population? - founder effect
A rabbit population consists of animals that are either very dark on top or very light on top. The
color pattern is not related to sex. No rabbit shows intermediate coloration (medium darkness).
This pattern might result from - disruptive selection
Large antlers in male elk, which are used for battles between males, are a good example of a trait
favored by - intrasexual selection
A+
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 first-born child will be female and
that their second-born child will be male? - 25%
The chromosome theory of inheritance states that - the behavior of chromosomes during meiosis
and fertilization accounts for patterns of inheritance.
All the offspring of a cross between a red-flowered plant and a white-flowered plant have pink
flowers. This means that the allele for red flowers is ________ to the allele for white flowers. -
incomplete dominance
Any gene located on a sex chromosome - is called a sex-linked gene
Female inheritance patterns cannot be analyzed by simply studying the X chromosome because -
the X chromosome is obtained from both father and mother.
Mendel conducted his most memorable experiments on - peas
Which of the following statements regarding hypotheses about inheritance is false - The blending
hypothesis suggests that all of the traits of the offspring come from either the mother or the
father.
Most genetic disorders of humans are caused by - recessive alleles
The individual features of all organisms are the result of - genetics and environment
Which of the following statements best explains why dominant alleles that cause lethal disorders
are less common than recessive alleles that cause lethal disorders? - Most individuals carrying a
lethal dominant allele have the disorder and die before they reproduce, whereas individuals
carrying a lethal recessive allele are more likely to be healthy and reproduce.
Which of the following enzymes catalyzes the linking together of RNA nucleotides to form
RNA? - RNA polymerase
Conjugation between a bacterium that lacks an F factor (F-) and a bacterium that has an F factor
on its chromosome (F+) could produce which of the following results? - The F- bacterium ends
up with a recombinant chromosome that carries some genes from the F+ bacterium, and the F+
bacterium ends up with an unaltered chromosome.
Which of the following options most accurately lists the sequence of events in translation? -
codon recognition → peptide bond formation → translocation → termination
, The transfer of genetic information from DNA to RNA is called - transcription
Experiments have demonstrated that the "words" of the genetic code (the units that specify
amino acids) are - three-nucleotide sequences
What nucleotide sequence would be found on the partner DNA strand of the ACTGT strand? -
TGACA
Any change in the nucleotide sequence of DNA is called - mutation
Which of the following statements regarding a DNA double helix is always true? - The amount
of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount
of cytosine.
The 2009 H1N1 flu virus - evolved through the genetic reshuffling of viruses that infect humans,
birds, and pigs.
DNA replication - uses each strand of a DNA molecule as a template for the creation of a new
strand
Which of the following options best depicts the flow of information when a gene directs the
synthesis of a cellular component? - DNA -> RNA -> Protein
In populations of the greater prairie chicken in Illinois, genetic diversity was - lost through
genetic drift and restored by gene flow.
Who developed a theory of evolution almost identical to Darwin's? - Wallace
The ultimate source of all new alleles is - mutation
Thirty people are selected for a long-term mission to colonize a planet many light years away
from Earth. The mission is successful and the population rapidly grows to several hundred
individuals. However, certain genetic diseases are unusually common in this group, and their
gene pool is quite different from that of the Earth population they have left behind. Which of the
following phenomena has left its mark on this population? - founder effect
A rabbit population consists of animals that are either very dark on top or very light on top. The
color pattern is not related to sex. No rabbit shows intermediate coloration (medium darkness).
This pattern might result from - disruptive selection
Large antlers in male elk, which are used for battles between males, are a good example of a trait
favored by - intrasexual selection
