Chromosomal Abnormalities Quiz

What is the term for a segment of DNA that codes for a specific group of proteins?

• Sister chromatid

• Gene

• Nondisjunction

• Chromosome

How many pairs of chromosomes do somatic or 'body' cells have?

• 12

• 23

• 46

• 69

What determines a person's gender in the 23rd pair of chromosomes?

• The length of the chromosomes

• The number of chromosomes

• The presence of X and Y chromosomes

• The presence of sister chromatids

What is the term for having an extra copy of chromosome number 21?

• Monosomy 21

• Trisomy 21

• Down syndrome

• Amniocentesis

What procedure involves taking a small sample of cells and fluid surrounding the baby to test for chromosomal abnormalities?

• Crossing over

• Meiosis

• Mitosis

• Amniocentesis

What is the term for the failure of sister chromatids to separate correctly during cell division?

• Nondisjunction

• Independent assortment

• Crossing over

• Karyotype

Which round of division in meiosis transforms a diploid parent cell into four different daughter cells, each of which are haploid?

• Telophase

• Meiosis 2

• Meiosis 1

• Prophase

When does abnormal chromosome division occur?

• During prophase

• During metaphase

• During anaphase

• During telophase

Tags

NGSS.HS-LS1-4

What is the main reason for older parents being more likely to have children with chromosomal abnormalities?

• Increased number of chromosomes

• Faster cell division

• Decreased number of chromosomes

• Sticky chromatids

In which round of meiosis is it slightly better to have nondisjunction occur?

• Both Meiosis 1 and Meiosis 2

• Neither Meiosis 1 nor Meiosis 2

• Meiosis 2

• Meiosis 1