CONTEMPORARY ISSUES IN BIOLOGY TCU
EXAM 1 2026 FULLY SOLVED EDITION
WITH ACCURATE QUESTIONS AND
ANSWERS
⩥ Down syndrome is an example of a _________ gene disorder.
Answer: chromosomal
⩥ Single gene disorders. Answer: correct number of chromosomes, but
one of the chromosomes contains a gene that is responsible for the
disease
⩥ Cystic Fibrosis is an example of a ________ gene disorder. Answer:
single
⩥ Down Syndrome. Answer: occurs when 21st chromosome pairs don't
separate properly during meiosis- child gets 3 chromosomes of 21st pair.
Caused by a recessive allele.
⩥ Hemophilia is a example of a ___________ gene disorder. Answer:
single
⩥ can a man be a carrier for a sex linked disease?. Answer: no
,⩥ hemophilia. Answer: mutations in DNA that prevent blood clotting
proteins from being made caused by a sex-linked recessive allele
-only linked to X sex chromosome
Xn Xn or Xn Y
⩥ Genotype. Answer: refers to alleles
⩥ phenotype. Answer: refers to appearance
⩥ how many human diseases are thought to be inherited?. Answer:
4,000
⩥ how many genetic tests available to doctors. Answer: 900
⩥ In vitro fertilization. Answer: tests can be run on embryos created this
way prior to implantation
⩥ DTC= Direct to consumer tests. Answer: -not regulated by FDA
-consumers don't usually have enough knowledge about genetics to
understand the results
⩥ genetic tests positives. Answer: -not as worried about getting a disease
, -might be able to change lifestyle to reduce risk of getting disease
-your doctor will now how often to check to see if the disease is
developing
-you might be able to take medicine to prevent the disease
⩥ Genetic test negatives. Answer: -may make you more worried
-may cause feeling of guilt or strain on family relationships
⩥ amniocentesis. Answer: around age 45 risk of having a child with
down syndrome exceeds risk of miscarriage
-before 45: test not done
-after 45: test is more common
⩥ Human are made out of about _______ types of proteins. Answer: 2
million
⩥ humans run on the energy of _______ converted from ______ and
______. Answer: ATP;glucose and fats
⩥ major function of a typical cell is to. Answer: produce proteins
⩥ What is required for the process of cells producing proteins. Answer:
ATP
EXAM 1 2026 FULLY SOLVED EDITION
WITH ACCURATE QUESTIONS AND
ANSWERS
⩥ Down syndrome is an example of a _________ gene disorder.
Answer: chromosomal
⩥ Single gene disorders. Answer: correct number of chromosomes, but
one of the chromosomes contains a gene that is responsible for the
disease
⩥ Cystic Fibrosis is an example of a ________ gene disorder. Answer:
single
⩥ Down Syndrome. Answer: occurs when 21st chromosome pairs don't
separate properly during meiosis- child gets 3 chromosomes of 21st pair.
Caused by a recessive allele.
⩥ Hemophilia is a example of a ___________ gene disorder. Answer:
single
⩥ can a man be a carrier for a sex linked disease?. Answer: no
,⩥ hemophilia. Answer: mutations in DNA that prevent blood clotting
proteins from being made caused by a sex-linked recessive allele
-only linked to X sex chromosome
Xn Xn or Xn Y
⩥ Genotype. Answer: refers to alleles
⩥ phenotype. Answer: refers to appearance
⩥ how many human diseases are thought to be inherited?. Answer:
4,000
⩥ how many genetic tests available to doctors. Answer: 900
⩥ In vitro fertilization. Answer: tests can be run on embryos created this
way prior to implantation
⩥ DTC= Direct to consumer tests. Answer: -not regulated by FDA
-consumers don't usually have enough knowledge about genetics to
understand the results
⩥ genetic tests positives. Answer: -not as worried about getting a disease
, -might be able to change lifestyle to reduce risk of getting disease
-your doctor will now how often to check to see if the disease is
developing
-you might be able to take medicine to prevent the disease
⩥ Genetic test negatives. Answer: -may make you more worried
-may cause feeling of guilt or strain on family relationships
⩥ amniocentesis. Answer: around age 45 risk of having a child with
down syndrome exceeds risk of miscarriage
-before 45: test not done
-after 45: test is more common
⩥ Human are made out of about _______ types of proteins. Answer: 2
million
⩥ humans run on the energy of _______ converted from ______ and
______. Answer: ATP;glucose and fats
⩥ major function of a typical cell is to. Answer: produce proteins
⩥ What is required for the process of cells producing proteins. Answer:
ATP
