Meiosis & Karyotypes Quiz

The karyotype diagram below represents a human female with the genetic disorder known as Turner syndrome. Chromosomal analysis of this karyotype reveals the mutation is a result of

• a missing X chromosome

• a missing Y chromosome

• an extra 21 chromosome

• missing chromosome #9

The karyotype diagram below represents a human male. Chromosomal analysis of this karyotype reveals the abnormality in this karyotype is:

• a missing X chromosome

• a missing Y chromosome

• an extra 21 chromosome

• missing chromosome #9

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

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.

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

• 1 from each parent

• 2 from each parent

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

• Pedigree

• Karyotype

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