MGRADES UPDATED EXAMS
LSUE BIOL1001.26 Final Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Sister chromatids are - CORRECT ANSWER - joined together at a centromere
Independent orientation of chromosomes at metaphase I results in an increase in the number of -
CORRECT ANSWER - possible combinations of characteristics.
During which phase of mitosis do the chromosomes line up on a plane equidistant from the two
spindle poles? - CORRECT ANSWER - Metaphase
Which of the following statements regarding cell division is false? - CORRECT
ANSWER - Cell division is common in eukaryotes but rare in prokaryotes.
Which of the following is probably the main factor responsible for the phenomenon of density-
dependent inhibition? - CORRECT ANSWER - physical contact of cell-surface proteins
between adjacent cells
The creation of genetically identical offspring by a single parent, without the participation of
sperm and egg, is called - CORRECT ANSWER - asexual reproduction.
Which of the following statements regarding prokaryotes is false? - CORRECT
ANSWER - Prokaryotic chromosomes are more complex than those of eukaryotes.
Which of the following variations of the sentence "Where is the cat" is most like a chromosomal
deletion? - CORRECT ANSWER - Where is Cat?
Mr. and Mrs. Smith have three sons in elementary school. Two of their children are progressing
normally, but their last son, Charles, has been much slower than his siblings at developing
speech and language skills. His parents are concerned that he has a learning disability and decide
,MGRADES UPDATED EXAMS
to investigate further. Since some learning disabilities can be genetically based, their pediatrician
recommends a chromosomal analysis. The results show that Charles has a trisomy of the sex
chromosomes, diagnosed as XYY, which is caused by nondisjunction in the formation of the
father's sperm. The nondisjunction resulted in an extra copy of the Y chromosome. The extra
copy was passed on to Charles during fertilization. Most often, this chromosomal change causes
no unusual physical features or medical problems, but those with trisomy of the sex
chromosomes do have a higher than normal risk of delays in learning development. If Charles -
CORRECT ANSWER - XXY
You are asked to culture an unidentified sample of animal tissue. You notice that the cells seem
to fail to exhibit density-dependent inhibition. The source of this tissue sample is most likely -
CORRECT ANSWER - A Cancer
As a patch of scraped skin heals, the cells fill in the injured area but do not grow beyond that.
This is an example of - CORRECT ANSWER - density-dependent inhibition
Asexual reproduction requires ________ individual(s). - CORRECT ANSWER -1
Mr. and Mrs. Smith have three sons in elementary school. Two of their children are progressing
normally, but their last son, Charles, has been much slower than his siblings at developing
speech and language skills. His parents are concerned that he has a learning disability and decide
to investigate further. Since some learning disabilities can be genetically based, their pediatrician
recommends a chromosomal analysis. The results show that Charles has a trisomy of the sex
chromosomes, diagnosed as XYY, which is caused by nondisjunction in the formation of the
father's sperm. The nondisjunction resulted in an extra copy of the Y chromosome. The extra
copy was passed on to Charles during fertilization. Most often, this chromosomal change causes
no unusual physical features or medical problems, but those with trisomy of the sex
chromosomes do have a higher than normal risk of delays in learning development. During whic
- CORRECT ANSWER - Anaphase II
When animal cells are grown in a petri dish, they typically stop dividing once they have formed a
single, unbroken layer on the bottom of the dish. This arrest of division is an example of -
CORRECT ANSWER - density-dependent inhibition
Which of the following helps maintain the structure of chromosomes and control the activity of
genes? - CORRECT ANSWER - A Protein
, MGRADES UPDATED EXAMS
Given the sex determination system in bees, we can expect that - CORRECT ANSWER -
female bees will produce eggs by meiosis, while male bees will produce sperm by mitosis.
A color-blind woman marries a man who is not color-blind. All of their sons, but none of their
daughters, are color-blind. Which of the following statements correctly explains these results? -
CORRECT ANSWER - The gene for color vision is found on the X chromosome
Which of the following statements regarding cross-breeding and hybridization is false? -
CORRECT ANSWER - The hybrid offspring of a cross are the P1 generation
Sickle-cell disease is an example of - CORRECT ANSWER - codominance and
pleiotropy.
The mechanism that "breaks" the linkage between linked genes is - CORRECT
ANSWER - crossing over.
What is the normal complement of sex chromosomes in a human male? - CORRECT
ANSWER - one X chromosome and one Y chromosome
Mendel conducted his most memorable experiments on - CORRECT ANSWER - Peas
Which of the following statements is false? - CORRECT ANSWER - Incomplete
dominance supports the blending hypothesis
Which of the following is essentially the opposite of pleiotropy? - CORRECT ANSWER -
polygenic inheritance
If A is dominant to a and B is dominant to b, what is the expected phenotypic ratio of the cross:
AaBb × AaBb? - CORRECT ANSWER - 9:3:3:1
LSUE BIOL1001.26 Final Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Sister chromatids are - CORRECT ANSWER - joined together at a centromere
Independent orientation of chromosomes at metaphase I results in an increase in the number of -
CORRECT ANSWER - possible combinations of characteristics.
During which phase of mitosis do the chromosomes line up on a plane equidistant from the two
spindle poles? - CORRECT ANSWER - Metaphase
Which of the following statements regarding cell division is false? - CORRECT
ANSWER - Cell division is common in eukaryotes but rare in prokaryotes.
Which of the following is probably the main factor responsible for the phenomenon of density-
dependent inhibition? - CORRECT ANSWER - physical contact of cell-surface proteins
between adjacent cells
The creation of genetically identical offspring by a single parent, without the participation of
sperm and egg, is called - CORRECT ANSWER - asexual reproduction.
Which of the following statements regarding prokaryotes is false? - CORRECT
ANSWER - Prokaryotic chromosomes are more complex than those of eukaryotes.
Which of the following variations of the sentence "Where is the cat" is most like a chromosomal
deletion? - CORRECT ANSWER - Where is Cat?
Mr. and Mrs. Smith have three sons in elementary school. Two of their children are progressing
normally, but their last son, Charles, has been much slower than his siblings at developing
speech and language skills. His parents are concerned that he has a learning disability and decide
,MGRADES UPDATED EXAMS
to investigate further. Since some learning disabilities can be genetically based, their pediatrician
recommends a chromosomal analysis. The results show that Charles has a trisomy of the sex
chromosomes, diagnosed as XYY, which is caused by nondisjunction in the formation of the
father's sperm. The nondisjunction resulted in an extra copy of the Y chromosome. The extra
copy was passed on to Charles during fertilization. Most often, this chromosomal change causes
no unusual physical features or medical problems, but those with trisomy of the sex
chromosomes do have a higher than normal risk of delays in learning development. If Charles -
CORRECT ANSWER - XXY
You are asked to culture an unidentified sample of animal tissue. You notice that the cells seem
to fail to exhibit density-dependent inhibition. The source of this tissue sample is most likely -
CORRECT ANSWER - A Cancer
As a patch of scraped skin heals, the cells fill in the injured area but do not grow beyond that.
This is an example of - CORRECT ANSWER - density-dependent inhibition
Asexual reproduction requires ________ individual(s). - CORRECT ANSWER -1
Mr. and Mrs. Smith have three sons in elementary school. Two of their children are progressing
normally, but their last son, Charles, has been much slower than his siblings at developing
speech and language skills. His parents are concerned that he has a learning disability and decide
to investigate further. Since some learning disabilities can be genetically based, their pediatrician
recommends a chromosomal analysis. The results show that Charles has a trisomy of the sex
chromosomes, diagnosed as XYY, which is caused by nondisjunction in the formation of the
father's sperm. The nondisjunction resulted in an extra copy of the Y chromosome. The extra
copy was passed on to Charles during fertilization. Most often, this chromosomal change causes
no unusual physical features or medical problems, but those with trisomy of the sex
chromosomes do have a higher than normal risk of delays in learning development. During whic
- CORRECT ANSWER - Anaphase II
When animal cells are grown in a petri dish, they typically stop dividing once they have formed a
single, unbroken layer on the bottom of the dish. This arrest of division is an example of -
CORRECT ANSWER - density-dependent inhibition
Which of the following helps maintain the structure of chromosomes and control the activity of
genes? - CORRECT ANSWER - A Protein
, MGRADES UPDATED EXAMS
Given the sex determination system in bees, we can expect that - CORRECT ANSWER -
female bees will produce eggs by meiosis, while male bees will produce sperm by mitosis.
A color-blind woman marries a man who is not color-blind. All of their sons, but none of their
daughters, are color-blind. Which of the following statements correctly explains these results? -
CORRECT ANSWER - The gene for color vision is found on the X chromosome
Which of the following statements regarding cross-breeding and hybridization is false? -
CORRECT ANSWER - The hybrid offspring of a cross are the P1 generation
Sickle-cell disease is an example of - CORRECT ANSWER - codominance and
pleiotropy.
The mechanism that "breaks" the linkage between linked genes is - CORRECT
ANSWER - crossing over.
What is the normal complement of sex chromosomes in a human male? - CORRECT
ANSWER - one X chromosome and one Y chromosome
Mendel conducted his most memorable experiments on - CORRECT ANSWER - Peas
Which of the following statements is false? - CORRECT ANSWER - Incomplete
dominance supports the blending hypothesis
Which of the following is essentially the opposite of pleiotropy? - CORRECT ANSWER -
polygenic inheritance
If A is dominant to a and B is dominant to b, what is the expected phenotypic ratio of the cross:
AaBb × AaBb? - CORRECT ANSWER - 9:3:3:1
