4.4 Errors in Meiosis

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

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

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

• Euploidy

• Aneuploidy

• Monoploidy

• Polyploidy

What is another name for down syndrome?

• Trisomy 18

• Trisomy 21

• Trisomy 13

• Trisomy 23

Tags

NGSS.HS-LS3-2

What is non-disjunction?

• Unable to form cells

• Unable to form chromosomes

• Unable to separate cells

• Unable separate chromosomes

An example of a mutation where a piece of chromosome breaks off and attaches to another chromosome is called ___.

• trisomy
• translocation
• inversion
• deletion

Tags

NGSS.HS-LS3-2

Notice the abnormal 23rd chromosome.  This individual suffers from which chromosomal genetic disorder?

• Klienfelter's Syndrome
• Down Syndrome
• Cris-du-Chat Syndrome
• Andrew's Syndrome

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

The following karyotype illustrates an example of which syndrome?

• Turner's Syndrome
• Klienfelter's Syndrome
• Edward's Syndrome
• Down Syndrome