Chaoter 19

Question 1

Individual who possesses two different allies for a particular gene is referred to as

Answer 1

Heterozygous

Question 2

This type of inheritance is called

Answer 2

Codominance

Question 3

An individual with the genotype XXY would have ____ chromosomes and phenotypically would be a _____

Answer 3

47

Male

Question 4

Tay-Sachs disease is inherited as an autosomal recessive disease. What is the probability that they will have a child with this disease

Answer 4

25%

Question 5

Hemophilia is an X-linked recessive disorder a daughter can be affiliated with hemophilia if she inherits

Answer 5

An xh allele from her dad and mom

Question 6

If a female inherits and expresses an X-linked recessive disorder what must be true about her parents

Answer 6

Father has the disease

Question 7

Then hair and sense of phenotypic traits that depends on many genes is called

Answer 7

Polygenic inheritance

Question 8

Which of the following conditions is caused by “trisomy 21”

Answer 8

Down syndrome

Question 9

What could be said of the jeans for two different traits that always appear together

Answer 9

These are linked genes on the same chromosome

Question 10

Which of the following does not apply to the sex chromosome X and Y

Answer 10

They are autosomes

Question 11

PKU is an inherited disease that causes serious mental retardation shortly after birth. PKU

Answer 11

Is a homozygous recessive condition in which individuals accumulate too much of the amino acid

Question 12

Genotype is determined by the interaction of phenotype and the environment

Answer 12

False

Question 13

For genes that show complete dominance

Answer 13

True

Question 14

Dominant alleles are always more common in a population than recessive alleles

Answer 14

False

Question 15

The Y chromosome contains a gene that leads to the development

Answer 15

True

Question 16

Human height, eye color and hair color are examples of traits determined by

Answer 16

True

Question 17

Groups of genes and the protein products may influence behavior and moods

Answer 17

True

Question 18

What is the term for normally occurring variation of the same gene

Answer 18

Allele

Question 19

How many different kinds of gametes are found by an individual

Answer 19

1

Question 20

Which of the following would provide an exception to mendels law of independent assortment

Answer 20

Adjacent genes in the same chromosome

Question 21

What is the likelihood that a man with homoaphelia meeting with the woman who is homozygous

Answer 21

0%

Question 22

What Tool is used to determine the probabilities of different genetic outcomes

Answer 22

Punnett square

Question 22

What to the following statements is true

Answer 22

Both a and c

Question 23

What is the basis for the tremendous genetic diversity

Answer 23

All of the choices

Question 24

Examination of a karyotype reveals 23 pairs of chromosomes with each homologous

Answer 24

The individual is female