Question 1

X-linked or sex-linked traits are expressed in males but not in females.

Accepted Answer

A) True 
 B)False

Question 2

How did chromosomes get their name?

Accepted Answer

The term,literally meaning "co...

Question 3

X-linked traits are more likely to be expressed in males.Why? Under what circumstances are they expressed in females?

Accepted Answer

Males are hemizygous,with only one X chr...

Question 4

The chromosome theory of inheritance sought to explain Mendelian patterns in terms of chromosome movement.Can you think of an experimental approach to test for the Mendelian principle of segregation using chromosomes?

Accepted Answer

If replicating chromosomes could be chem...

Question 5

Closely related species,like chimpanzees and humans,often differ in chromosome number by only one or two chromosomes,suggesting that chromosomes can experience fission and fusion over evolutionary time.Can you think of a way to test this?

Accepted Answer

Generate a karyotype for the species of ...

Question 6

Describe a situation in which two aneuploid gametes would yield a euploid zygote.

Accepted Answer

The aneuploidy of the gametes must be su...

Question 7

Nondisjunction can lead to two forms of aneuploidy.What are they,and how do they occur?

Accepted Answer

The two most common aneuploid conditions...

Question 8

The chromosome theory of inheritance states that

Accepted Answer

A)  genes are located on chromosomes.
B)  chromosomes replicate before cell division.
C)  alleles of a gene segregate during cell division.
D)  chromosomes consist of DNA.
E)  different chromosomes assort independently of one another.F) A) and D)
G) D) and E)

Question 9

Chromosomes with only one arm are known as

Accepted Answer

A)  metacentric.
B)  submetacentric.
C)  acrocentric.
D)  telocentric.
E)  acentric.F) B) and E)
G) A) and B)

Question 10

In human males,genes on the X chromosome are

Accepted Answer

A)  homozygous.
B)  heterozygous.
C)  homogametic.
D)  heterogametic.
E)  hemizygous.F) A) and D)
G) A) and C)

Question 11

A litter produced by a calico cat is not expected to include

Accepted Answer

A)  solid-colored female kittens.
B)  calico female kittens.
C)  solid-colored male kittens.
D)  calico male kittens.
E)  Any of theseF) C) and D)
G) A) and D)

Question 12

A person with an XO genotype for the sex chromosomes would be phenotypically

Accepted Answer

A)  male.
B)  female.
C)  intersex (both male and female) .
D)  male or female with equal probability.
E)  neither male nor female.F) A) and D)
G) B) and D)

Question 13

Synaptonemal complex forms during

Accepted Answer

A)  leptonema.
B)  zygonema.
C)  pachynema.
D)  diplonema.
E)  diakinesis.F) A) and E)
G) A) and C)

Question 14

Barr bodies are inactivated X chromosomes.

Accepted Answer

A) True 
 B)False

Question 15

Match between columns
                        Premises: 3N
XXY
2N+1
XO
XX

Accepted Answer

The Answer of Aneuploidy and Klinefelter syndrome and Polyploidy and is...

Question 16

Phenotypically,a female (XX) mouse embryo that was transformed with a small piece of a Y chromosome bearing the SRY gene would develop as

Accepted Answer

A)  a male.
B)  a female.
C)  an intersex individual.
D)  a male initially,then revert to female after birth.
E)  a female initially,then revert to male after birth.F) A) and E)
G) A) and D)

Question 17

Half a woman's somatic cells express her paternal X chromosome and half express her maternal X chromosome.

Accepted Answer

A) True 
 B)False

Question 18

What is the connection between the work of Mary Lyon and Murray Barr?

Accepted Answer

Mary Lyon put forth the theory...

Question 19

In an organism with 16 chromosomes per cell,how many DNA molecules are present in a cell undergoing anaphase of mitosis?

Accepted Answer

A)  8
B)  16
C)  24
D)  32
E)  64F) A) and E)
G) A) and D)

Question 20

Drosophila fruit flies,like mammals,have an X-Y sex-determination system.The insect differs from the mammalian system in an important respect,however.What is it?

Accepted Answer

While Drosophila has X-Y sex determinati...

Exam 12: Chromosomal Basis of Inheritance

Synaptonemal complex forms during

Correct Answer
verified

Barr bodies are inactivated X chromosomes.

Correct Answer
verified

Please select the best match for each term.

Drosophila fruit flies,like mammals,have an X-Y sex-determination system.The insect differs from the mammalian system in an important respect,however.What is it?

Correct Answer
verified
While Drosophila has X-Y sex determinati...
View Answer

The chromosome theory of inheritance states that

Correct Answer
verified

In an organism with 16 chromosomes per cell,how many DNA molecules are present in a cell undergoing anaphase of mitosis?

Correct Answer
verified

A litter produced by a calico cat is not expected to include

Correct Answer
verified

How did chromosomes get their name?

Correct Answer
verified
The term,literally meaning "co...
View Answer

Chromosomes with only one arm are known as

Correct Answer
verified

Nondisjunction can lead to two forms of aneuploidy.What are they,and how do they occur?

Correct Answer
verified
The two most common aneuploid conditions...
View Answer

What is the connection between the work of Mary Lyon and Murray Barr?

Correct Answer
verified
Mary Lyon put forth the theory...
View Answer

Phenotypically,a female (XX) mouse embryo that was transformed with a small piece of a Y chromosome bearing the SRY gene would develop as

Correct Answer
verified

Describe a situation in which two aneuploid gametes would yield a euploid zygote.

Correct Answer
verified
The aneuploidy of the gametes must be su...
View Answer

A person with an XO genotype for the sex chromosomes would be phenotypically

Correct Answer
verified

Half a woman's somatic cells express her paternal X chromosome and half express her maternal X chromosome.

Correct Answer
verified

Closely related species,like chimpanzees and humans,often differ in chromosome number by only one or two chromosomes,suggesting that chromosomes can experience fission and fusion over evolutionary time.Can you think of a way to test this?

Correct Answer
verified
Generate a karyotype for the species of ...
View Answer

X-linked traits are more likely to be expressed in males.Why? Under what circumstances are they expressed in females?

Correct Answer
verified
Males are hemizygous,with only one X chr...
View Answer

The chromosome theory of inheritance sought to explain Mendelian patterns in terms of chromosome movement.Can you think of an experimental approach to test for the Mendelian principle of segregation using chromosomes?

Correct Answer
verified
If replicating chromosomes could be chem...
View Answer

In human males,genes on the X chromosome are

Correct Answer
verified

X-linked or sex-linked traits are expressed in males but not in females.

Correct Answer
verified

Exam 12: Chromosomal Basis of Inheritance

Synaptonemal complex forms during

Correct AnswerverifiedShow Answer

Barr bodies are inactivated X chromosomes.

Correct AnswerverifiedShow Answer

Please select the best match for each term.

Drosophila fruit flies,like mammals,have an X-Y sex-determination system.The insect differs from the mammalian system in an important respect,however.What is it?

Correct AnswerverifiedWhile Drosophila has X-Y sex determinati...View AnswerShow Answer

The chromosome theory of inheritance states that

Correct AnswerverifiedShow Answer

In an organism with 16 chromosomes per cell,how many DNA molecules are present in a cell undergoing anaphase of mitosis?

Correct AnswerverifiedShow Answer

A litter produced by a calico cat is not expected to include

Correct AnswerverifiedShow Answer

How did chromosomes get their name?

Correct AnswerverifiedThe term,literally meaning "co...View AnswerShow Answer

Chromosomes with only one arm are known as

Correct AnswerverifiedShow Answer

Nondisjunction can lead to two forms of aneuploidy.What are they,and how do they occur?

Correct AnswerverifiedThe two most common aneuploid conditions...View AnswerShow Answer

What is the connection between the work of Mary Lyon and Murray Barr?

Correct AnswerverifiedMary Lyon put forth the theory...View AnswerShow Answer

Phenotypically,a female (XX) mouse embryo that was transformed with a small piece of a Y chromosome bearing the SRY gene would develop as

Correct AnswerverifiedShow Answer

Describe a situation in which two aneuploid gametes would yield a euploid zygote.

Correct AnswerverifiedThe aneuploidy of the gametes must be su...View AnswerShow Answer

A person with an XO genotype for the sex chromosomes would be phenotypically

Correct AnswerverifiedShow Answer

Half a woman's somatic cells express her paternal X chromosome and half express her maternal X chromosome.

Correct AnswerverifiedShow Answer

Closely related species,like chimpanzees and humans,often differ in chromosome number by only one or two chromosomes,suggesting that chromosomes can experience fission and fusion over evolutionary time.Can you think of a way to test this?

Correct AnswerverifiedGenerate a karyotype for the species of ...View AnswerShow Answer

X-linked traits are more likely to be expressed in males.Why? Under what circumstances are they expressed in females?

Correct AnswerverifiedMales are hemizygous,with only one X chr...View AnswerShow Answer

The chromosome theory of inheritance sought to explain Mendelian patterns in terms of chromosome movement.Can you think of an experimental approach to test for the Mendelian principle of segregation using chromosomes?

Correct AnswerverifiedIf replicating chromosomes could be chem...View AnswerShow Answer

In human males,genes on the X chromosome are

Correct AnswerverifiedShow Answer

X-linked or sex-linked traits are expressed in males but not in females.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
While Drosophila has X-Y sex determinati...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The term,literally meaning "co...
View Answer

Correct Answer
verified

Correct Answer
verified
The two most common aneuploid conditions...
View Answer

Correct Answer
verified
Mary Lyon put forth the theory...
View Answer

Correct Answer
verified

Correct Answer
verified
The aneuploidy of the gametes must be su...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Generate a karyotype for the species of ...
View Answer

Correct Answer
verified
Males are hemizygous,with only one X chr...
View Answer

Correct Answer
verified
If replicating chromosomes could be chem...
View Answer

Correct Answer
verified

Correct Answer
verified