LSUE BIOLOGY 1001 FINAL EXAM NEWEST 2024-2025
COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
FINAL EXAM
Which of the following terms refers to a situation where a single
phenotypic character is determined by the additive effects of two
or more genes?
A) incomplete dominance
B) codominance
C) pleiotropy
D) polygenic inheritance - ANSWER- D) polygenic inheritance
Amniocentesis and chorionic villus sampling allows for ____
and ____ of the fetus so that it can be tested for abnormalities
A) imaging ...karyotyping
B) sexing.... imaging
C) karyotyping... biochemical testing
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D) direct observation.. biochemical testing - ANSWER- D)
direct observation.. biochemical testing
A woman has been trying to conceive for several years,
unsuccessfully. At a fertility clinic, they discover that she has
blocked Fallopian tubes. Using modern technologies, some of
her eggs are removed, fertilized with her husband's sperm, and
implanted into her uterus. The procedure is successful, but the
couple discovers that their son is color blind and the blood type
O. The woman claims that the child can't be theirs since she has
blood type A and her husband has blood type B. Also, neither
parent is color blind, although one grand parent (the woman's
father) is also color blind. As a genetic counselor, you would
explain to the parent that
A) the eggs must have been accidentally switched, since the
baby's blood type has to match one of his parents
B) each parent could have contributed one recessive allele,
resulting in type O blood
C) the eggs must have been accidentally switched, since a type
A parent and a ty - ANSWER- B) each parent could have
contributed one recessive allele, resulting in type O blood
According to scientist, about what percentage of men currently
living in Central Asia may be descended from the Mongolian
ruler Genghis Khan?
,3|Page
A) 4%
B) 8%
C) 25%
D) 40% - ANSWER- B) 8%
Which of the following is essentially the opposite of pleiotropy?
A) incomplete dominance
B) codominance
C) multiple alleles
D) polygenic inheritance - ANSWER- D) polygenic inheritance
The chromosome theory of inheritance states that
A) chromosomes that exhibit mutations are the source of genetic
variation
B) the behavior of chromosomes during meiosis and fertilization
accounts for patterns of inheritance
C) the behavior of chromosomes during mitosis accounts for
inheritance patterns
, 4|Page
D) humans have 46 chromosomes - ANSWER- B) the behavior
of chromosomes during meiosis and fertilization accounts for
patters of inheritance
The alleles of a gene are found at ______ chromosomes
A) the same locus on non homologous
B) different loci on homologous
C) different loci on non homologous
D) the same locus on homologous - ANSWER- D) the same
locus on homologous
DNA polymerase
A) joins nucleotides to produce new polymers of RNA
B) reads the RNA strand, and adds the complementary nitrogen
bases to make new RNA strand
C) Stretches the DNA polymers to make new DNA strands
D) joins the two DNA fragments
E) reads the DNA strands, and adds the complementary
nucleotides to amen a new DNA strand - ANSWER- E) reads
the DNA strands, and adds the complementary nucleotides to
amen a new DNA strand
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