Chromosomes and Karyotypes

Multiple Choice

Which part of the cell do we find genetic material (DNA) in?

• Mitochondria
• Cell membrane
• Nucleus
• Cytoplasm

Multiple Choice

Which phase of the cell cycle is when scientists take a picture to construct a karyotype?

• Interphase

• Prophase

• Metaphase

• Anaphase

Multiple Choice

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

Multiple Choice

By looking at the chromosomes is this individual biologically male or female? How do you know?

• Female, because they have two X chromosomes

• Male, because they have one X and one Y chromosome

Multiple Choice

By looking at the chromosomes how can you tell that this person is biologically female?

• Because there are two X chromosomes

• Because there are more chromosomes than in a male

Mutations can be:

1. Beneficial (good)

2. Harmful (bad)

3. Neutral (not "good" or "bad")
   

Multiple Choice

Mutations in many bacteria allow them to survive in our bodies even when we take antibiotics. For the bacteria, this is considered a _____________ mutation.

• harmful

• beneficial

• neutral

Multiple Choice

Some types of mutations can cause cancer. This type of mutation is considered:

• harmful

• beneficial

• neutral

Multiple Choice

Heterochromia is a genetic mutation that causes two different colored eyes in some dogs and humans. Usually, this mutation does not affect the health of the organism. This mutation is considered:

• harmful

• beneficial

• neutral

Multiple Choice

Polydactyl cats are born with extra toes on their paws. This can help certain breeds of cats catch prey. This type of mutation is:

• harmful

• beneficial

• neutral