Human Inheritance

The body cells of humans contains ___ pairs of chromosomes

• 46

• 48

• 23

• 24

Tags

NGSS.HS-LS3-1

A widow's peak is a trait controlled by _______ genes.

• many

• a few

• single celled

• none of the above

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In the case of sex-linked traits, only ________ can be carriers.

• males

• females

• both males and females

In ________, a recessive allele on the X chromosome often has no matching allele on the Y chromosome.

• males

• females

• sex-linked genes

________ thing determined by the genes carried on a sex chromosome is a person's sex.

• One

• The only

Tags

NGSS.HS-LS3-1

Colorblindness is a trait controlled by a _________ allele on the X chromosome.

• dominant

• recessive

• codominant

• exclusive

The sex chromosome carried by a human egg will always be a(n)___ chromosome.

• Y

• XX

• X

• XY

A person who has one recessive and one dominant allele for a trait is called a(n)____________.

• female

• male

• mutant

• carrier

Tags

NGSS.HS-LS3-1

The only pair of human chromosomes that do not always match are the

• male sex genes

• female sex genes

• sex-linked genes

• sex chromosomes

Genes found on the X and Y chromosomes are often called _____________ _____________ genes.

• sex chromosomes

• sex alleles

• sex-linked

• none of the above

Tags

NGSS.HS-LS3-1