Biology Quiz: The Genetics Of Sex

Genetics is a branch of the scientific study of biology which deals with heredity, genes, and genetic variation and allows us to gain specific knowledge about our bodies that we couldn’t be able to tell with the naked eye. In the following quiz, we’ll be taking a look at genetics from the perspective of sex! What do you know about X chromosomes, Y chromosomes, and more? Let’s find out!

Questions and Answers

1.

In honeybees, fertilized eggs develop into:
- A.
  
  Fruit flies
- B.
  
  Males
- C.
  
  Females
- D.
  
  Intersex bees
- E.
  
  None of the above.
Correct Answer
C. Females
2.

In humans, the homogametic sex is the _______.

Correct Answer
female
3.

If a mutant allele behaves as a dominant allele in males but as a recessive allele in females, then this is an example of a(n) _______ trait. (We didn't cover this one this year, 2010).

Correct Answer
sex-influenced
sex influenced
4.

In fowl, the cock-feather gene is only expressed in roosters that are homozygous for that allele, so this is an example of a(n) _______ trait. (We didn't cover this one this year, 2010).

Correct Answer
sex-limited
sex limited
5.

The all-important gene on the human Y chromosome that causes the gonad to develop into a testis is the gene called _______.

Correct Answer
SRY
sex-determining region of the Y
6.

The protein made by the male-determining gene on the Y chromosome in humans is called ________.

Correct Answer
TDF
testis determining factor
testis-determining factor
7.

X chromosome inactivation in mammals is the mechanism by which _________ occurs.

Correct Answer
dosage compensation
8.

The number of Barr bodies that an XXX human female should have _____.

Correct Answer
2
two
9.

The sex of calico or tortoise shell cat (usually) ________.

Correct Answer
female

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Current Version
Mar 21, 2022

Quiz Edited by
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May 12, 2009

Quiz Created by
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Biology Quiz: The Genetics Of Sex

In honeybees, fertilized eggs develop into:

In humans, the homogametic sex is the _______.

If a mutant allele behaves as a dominant allele in males but as a recessive allele in females, then this is an example of a(n) _______ trait. (We didn't cover this one this year, 2010).

In fowl, the cock-feather gene is only expressed in roosters that are homozygous for that allele, so this is an example of a(n) _______ trait. (We didn't cover this one this year, 2010).

The all-important gene on the human Y chromosome that causes the gonad to develop into a testis is the gene called _______.

The protein made by the male-determining gene on the Y chromosome in humans is called ________.

X chromosome inactivation in mammals is the mechanism by which _________ occurs.

The number of Barr bodies that an XXX human female should have _____.

The sex of calico or tortoise shell cat (usually) ________.