WorksheetsChromosomal Abnormalities Quiz
Total questions: 10
Worksheet time: 5mins
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
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
