Human Heredity

What is an autosome?

• automobile built for one person
• chromosome that does not determine gender
• chromosome that does determine gender
• a plant because they do photosynthesis

Looking at the karyotype, is this person male or female, and how do you know?

• There is no way to tell from a karyotype.
• Male - has two X's
• female - has two X's
• Male - has an X and Y

How is colorblindness inherited and what would be a colorblind male's genotype?

• x-linked recessive; X^hy

• autosomal recessive; hh

• autosomal dominant; HH or Hh

• x-linked dominant; X^Hy

How is sickle cell disorder inherited, and what would a be a genotype for a female with sickle cell?

• x-linked recessive; X^aX^a
• x-linked dominant; X^AX^A or X^AX^a
• autosomal dominant AA or Aa
• Autosomal recessive aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How is cystic fibrosis inherited, and what would be a genotype for a male with CF?

• ; X^fy

• X^Fy

• recessive:ff

• Dominant:FF or Ff

How is Huntington's disorder inherited, and what would be a genotype for a female with it?

• X-linked dominant; X^HX^H or X^HX^h

• X-linked recessive; X^hX^h

• dominant; HH or Hh

• recessive hh

How is hemophilia inherited, and what would be a genotype for an affected male?

• X-linked recessive; X^hy

• X-linked dominant; X^Hy

• dominant; HH or Hh

• recessive; hh

What percentage of human sperm cells carry an X chromosome?

• 0%
• 25%
• 50%
• 100%

Sex-linked genes are located

• the Y chromosome only

• the autosomal chromosomes

• the X chromosome only

People who are heterozygous for sickle cell disease are generally healthy because they

• have some normal hemoglobin in their red blood cells
• are not affected by the gene until they are elderly
• produce more hemoglobin than they need
• are resistant to many different diseases

Tags

NGSS.HS-LS3-2