Chromosomes & Karyotypes

Is this individual male or female?

• Male

• Female

Answer explanation

Male because they contain an X and a Y chromosome. Females contain two Xs or XX.

Tags

NGSS.HS-LS3-1

Pairs of similar chromosomes are called...

• homologous chromosomes

• sister chromatids

Tags

NGSS.HS-LS3-2

When a cell divides, DNA strands coil around proteins to form ...

• chromatin

• chromosomes

Answer explanation

Chromosomes are the coiled up form of DNA. Chromatin is loose DNA strands.

Tags

NGSS.HS-LS1-4

Homologous chromosome pairs are a combination of how many chromosomes from each parent?

• 1 from each parent

• 2 from each parent

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is an organized picture of all of an organism’s homologous chromosome pairs lined up with each other?

• Pedigree

• Karyotype

Tags

NGSS.HS-LS3-2

Which of the following is used to determine genetic defects or if an extra or missing chromosome exist in an organism?

• Pedigree

• Punnett Square

• Karyotype

Which type of chromosome determines if someone will be male or female?

• autosomes

• sex chromosomes

Which set of chromosomes represents a male?

• XX

• XY

Which set of chromosomes represents a female?

• XX

• XY

In a duplicated chromosome, sister chromatids are attached by what structure?

• centromere

• centriole

• chromatin