Non disjunction

Having 2 sets of chromosomes is called what?

• Diploid

• Haploid

What is non-disjunction?

• Unable to form cells

• Unable to form chromosomes

• Unable to separate cells

• Unable separate chromosomes

Where does non-disjunction occur?

• Metaphase

• Anaphase

• Prophase

• Telophase

What is another name for down syndrome?

• Trisomy 18

• Trisomy 21

• Trisomy 13

• Trisomy 23

Tags

NGSS.HS-LS3-2

The presence of an abnormal number of chromosomes in a cell is called

• Euploidy

• Aneuploidy

• Monoploidy

• Polyploidy

Non-disjunction occurs in

• Only mitosis

• Only meiosis

• Both mitosis and meiosis

Which is NOT a condition that arises from non disjunction?

• Klinefelter Syndrome

• Down Syndrome

• Turner’s Syndrome

• Hurler Syndrome

If non disjunction occurs in meiosis 2, what is not separated?

• Homologous chromosomes

• Sister chromatids

Non disjunction in what phase causes all gametes to be abnormal?

• Anaphase 1

• Anaphase 2

A pair of identical chromosomes (one inherited from mom and one inherited from dad) are called ______________________________.

• sister chromotids

• centromeres

• homologous chromosomes

• autosomes

Tags

NGSS.HS-LS3-1