Question 1

Match the following letters to the number with which they best correspond.
 a.genotype
b.heterozygous
c.dihybrid cross
d.pleiotropic
e.codominance
f.epistasis
g.incomplete dominance
h.syndrome
i.continuous variation
j.aneuploidy
-experiment in which individuals heterozgous for two genes are crossed

Accepted Answer

The answer of Match the following letters to the number...

Question 2

A bell-shaped curve of phenotypic variation is indicative of

Accepted Answer

A)   environmental effects on phenotypes.
B)   incomplete dominance.
C)   multiple alleles.
D)   epistasis.
E)   more than one of these.F) B) and D)
G) D) and E)

Question 3

Why are most X-linked disorders recessive?

Accepted Answer

A)   X-linked dominant disorders are always fatal to females
B)   females only have one active X- dominant disorders would render them sterile
C)   dominant X-linked disorders are almost always fatal to the male embryo
D)   dominant X-linked disorders, regardless of their overall effect, prevent proper sperm formation
E)   more than one of these is the reason why most X-linked disorders are fatalF) A) and B)
G) A) and E)

Question 4

Syndrome means

Accepted Answer

A)   an abnormal number of chromosomes.
B)   a simple genetic disease.
C)   a collection of associated symptoms.
D)   a recessive disorder.
E)   a genetic disorder involving base-pair substitutions.F) C) and D)
G) B) and D)

Question 5

The ABO blood types are examples of

Accepted Answer

A)   multiple alleles and codominance.
B)   pleiotropy.
C)   multiple alleles.
D)   incomplete dominance.
E)   codominance.F) B) and E)
G) A) and D)

Question 6

Match the following letters to the number with which they best correspond.
 a.genotype
b.heterozygous
c.dihybrid cross
d.pleiotropic
e.codominance
f.epistasis
g.incomplete dominance
h.syndrome
i.continuous variation
j.aneuploidy
-condition in which one allele is not fully dominant over another,so the heterozygous phenotype appears to be a blend of the two homozygous phenotypes

Accepted Answer

The answer of Match the following letters to the number...

Question 7

In Tay-Sachs disease,which organelle is affected?

Accepted Answer

A)   lysosomes
B)   mitochondria
C)   Golgi bodies
D)   nuclei
E)   rough endoplasmic reticulaF) D) and E)
G) A) and B)

Question 8

Classification.Answer the questions in reference to the five disorders listed below.
a.Turner syndrome
b.PKU
c.Hutchinson-Gifford progeria
d.hemophilia
e.Tay-Sachs
-disorder that results from a missing sex chromosome

Accepted Answer

The answer of Classification.Answer the questions in reference to the...

Question 9

Achondroplasia
Achondroplasia is an autosomal dominant disorder,however homozygous dominant individuals do not have achondroplasia - they either die before birth or very shortly thereafter.The homozygous recessive condition is normal.A dwarf couple decide to have children.Use this information to answer the following question(s) .
-In the example above,what is probability that the couple will have a child with achondroplasia?

Accepted Answer

A)   0
B)   1/4
C)   1/3
D)   2/3
E)   1/2F) B) and D)
G) B) and C)

Question 10

In a Punnett square,the letters on top of the square and on the side of the square represent

Accepted Answer

A)   offspring genotypes.
B)   parental genotypes.
C)   parental gametes.
D)   offspring phenotypes.
E)   parental phenotypes.F) A) and E)
G) A) and B)

Question 11

Which of the following would be the LEAST satisfactory organism for genetic research?

Accepted Answer

A)   humans
B)   bacteria
C)   mice
D)   fruit flies
E)   pea plantsF) A) and E)
G) A) and D)

Question 12

Cystic fibrosis is a recessive disorder.If a couple,each of whom is heterozygous,have children,what is the probability that they will have a child with cystic fibrosis?

Accepted Answer

A)   0%
B)   25%
C)   50%
D)   75%
E)   100%F) B) and E)
G) A) and B)

Question 13

Mendel's dihybrid crosses (but not his monohybrid crosses) showed that

Accepted Answer

A)   some genes were linked together.
B)   the two alleles controlling a trait were divided equally among the gametes.
C)   alleles for different traits were inherited independently.
D)   one of the pair of alleles is dominant to the other.
E)   the crossing of two different homozygous forms will not produce any offspring in the first generation that would look like either of the parents.F) A) and B)
G) C) and D)

Question 14

In humans,hair texture is an incompletly dominant trait.Curly hair is the homozygous dominant trait; smooth hair is homozgous recessive; wavy hair is heterozygous.If two wavy haired individuals have children what is the expected phenotype ratio?

Accepted Answer

A)   1:2:1
B)   3:1
C)   4:0
D)   1:1
E)   1:0F) B) and E)
G) A) and B)

Question 15

In genetic analyses,researchers know that linkage of genes will introduce exceptions to the principle of

Accepted Answer

A)   dominance.
B)   segregation.
C)   recessiveness.
D)   independent assortment.
E)   chromosome inheritance.F) A) and D)
G) B) and C)

Question 16

Match the following letters to the number with which they best correspond.
 a.genotype
b.heterozygous
c.dihybrid cross
d.pleiotropic
e.codominance
f.epistasis
g.incomplete dominance
h.syndrome
i.continuous variation
j.aneuploidy
-the particular alleles carried by an individual

Accepted Answer

The answer of Match the following letters to the number...

Question 17

In incomplete dominance,

Accepted Answer

A)   one allele is not dominant to another allele.
B)   the genotype can be determined by the phenotype.
C)   the heterozygote is somewhat intermediate to the two homozygotes.
D)   the intermediate phenotype may be the result of enzyme insufficiency.
E)   all of these are true.F) C) and D)
G) A) and D)

Question 18

Which of the following is NOT associated with Marfan syndrome?

Accepted Answer

A)   skin lacking elasticity
B)   loose joints
C)   weakened aorta
D)   short stature
E)   mutated fibrillin geneF) A) and C)
G) A) and E)

Question 19

The main problem for those with cystic fibrosis involves which of the following?

Accepted Answer

A)   mucus sticking to dry surfaces
B)   jerky muscle contractions
C)   constant thirst
D)   salt accumulations between tissues
E)   low pH in tissues preventing proper enzymatic activityF) B) and D)
G) A) and D)

Question 20

If a daughter expresses an X-linked recessive gene,she inherited the trait from

Accepted Answer

A)   her mother.
B)   her father.
C)   both parents.
D)   neither parent.
E)   her grandmother.F) B) and C)
G) B) and E)

Exam 9: Patterns of Inheritance

Match the following letters to the number with which they best correspond. a.genotype b.heterozygous c.dihybrid cross d.pleiotropic e.codominance f.epistasis g.incomplete dominance h.syndrome i.continuous variation j.aneuploidy -experiment in which individuals heterozgous for two genes are crossed

Correct Answer
verified

Why are most X-linked disorders recessive?

Correct Answer
verified

In a Punnett square,the letters on top of the square and on the side of the square represent

Correct Answer
verified

Correct Answer
verified

Which of the following would be the LEAST satisfactory organism for genetic research?

Correct Answer
verified

In Tay-Sachs disease,which organelle is affected?

Correct Answer
verified

Cystic fibrosis is a recessive disorder.If a couple,each of whom is heterozygous,have children,what is the probability that they will have a child with cystic fibrosis?

Correct Answer
verified

In incomplete dominance,

Correct Answer
verified

Match the following letters to the number with which they best correspond. a.genotype b.heterozygous c.dihybrid cross d.pleiotropic e.codominance f.epistasis g.incomplete dominance h.syndrome i.continuous variation j.aneuploidy -the particular alleles carried by an individual

Correct Answer
verified

Classification.Answer the questions in reference to the five disorders listed below. a.Turner syndrome b.PKU c.Hutchinson-Gifford progeria d.hemophilia e.Tay-Sachs -disorder that results from a missing sex chromosome

Correct Answer
verified

The ABO blood types are examples of

Correct Answer
verified

Correct Answer
verified

In genetic analyses,researchers know that linkage of genes will introduce exceptions to the principle of

Correct Answer
verified

If a daughter expresses an X-linked recessive gene,she inherited the trait from

Correct Answer
verified

Mendel's dihybrid crosses (but not his monohybrid crosses) showed that

Correct Answer
verified

In humans,hair texture is an incompletly dominant trait.Curly hair is the homozygous dominant trait; smooth hair is homozgous recessive; wavy hair is heterozygous.If two wavy haired individuals have children what is the expected phenotype ratio?

Correct Answer
verified

Syndrome means

Correct Answer
verified

Which of the following is NOT associated with Marfan syndrome?

Correct Answer
verified

A bell-shaped curve of phenotypic variation is indicative of

Correct Answer
verified

The main problem for those with cystic fibrosis involves which of the following?

Correct Answer
verified

Exam 9: Patterns of Inheritance

Match the following letters to the number with which they best correspond. a.genotype b.heterozygous c.dihybrid cross d.pleiotropic e.codominance f.epistasis g.incomplete dominance h.syndrome i.continuous variation j.aneuploidy -experiment in which individuals heterozgous for two genes are crossed

Correct AnswerverifiedShow Answer

Why are most X-linked disorders recessive?

Correct AnswerverifiedShow Answer

In a Punnett square,the letters on top of the square and on the side of the square represent

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following would be the LEAST satisfactory organism for genetic research?

Correct AnswerverifiedShow Answer

In Tay-Sachs disease,which organelle is affected?

Correct AnswerverifiedShow Answer

Cystic fibrosis is a recessive disorder.If a couple,each of whom is heterozygous,have children,what is the probability that they will have a child with cystic fibrosis?

Correct AnswerverifiedShow Answer

In incomplete dominance,

Correct AnswerverifiedShow Answer

Match the following letters to the number with which they best correspond. a.genotype b.heterozygous c.dihybrid cross d.pleiotropic e.codominance f.epistasis g.incomplete dominance h.syndrome i.continuous variation j.aneuploidy -the particular alleles carried by an individual

Correct AnswerverifiedShow Answer

Classification.Answer the questions in reference to the five disorders listed below. a.Turner syndrome b.PKU c.Hutchinson-Gifford progeria d.hemophilia e.Tay-Sachs -disorder that results from a missing sex chromosome

Correct AnswerverifiedShow Answer

The ABO blood types are examples of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In genetic analyses,researchers know that linkage of genes will introduce exceptions to the principle of

Correct AnswerverifiedShow Answer

If a daughter expresses an X-linked recessive gene,she inherited the trait from

Correct AnswerverifiedShow Answer

Mendel's dihybrid crosses (but not his monohybrid crosses) showed that

Correct AnswerverifiedShow Answer

In humans,hair texture is an incompletly dominant trait.Curly hair is the homozygous dominant trait; smooth hair is homozgous recessive; wavy hair is heterozygous.If two wavy haired individuals have children what is the expected phenotype ratio?

Correct AnswerverifiedShow Answer

Syndrome means

Correct AnswerverifiedShow Answer

Which of the following is NOT associated with Marfan syndrome?

Correct AnswerverifiedShow Answer

A bell-shaped curve of phenotypic variation is indicative of

Correct AnswerverifiedShow Answer

The main problem for those with cystic fibrosis involves which of the following?

Correct AnswerverifiedShow Answer

Correct Answer
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