MLT552 QUIZ 1

The number of human chromosomes is ______.

Each chromosome is made up of DNA tightly coiled many times around proteins called ________ that support its structure.

The ___________ holds the replicated sister chromatids together.

• centriole
• chromosomes
• centromere
• cycles

Which of the following represents the correct order of the phases of mitosis?

• prophase -> anaphase -> metaphase -> telophase

• prophase -> metaphase -> anaphase -> telophase

• prophase -> metaphase -> telophase -> anaphase

• metaphase -> prophase -> telophase -> anaphase

Which of the following statements about chromosome is INCORRECT?

• A chromosome consists of 2 sister chromatids.

• The classification of human chromosome is based on the position of the centromere on the chromosome.

• All chromosomes come from the same parent.

• Chromosome is found within the nucleus.

Karyotyping is an orderly arrangement of the chromosomes in pairs based on

• size

• banding pattern

• location of telomere

• location of centromere

Chromosomes that are paired by size and content are called _______ chromosomes.

Human eggs and sperm are _____, and each has ____ chromosomes.

• diploid, 23

• diploid, 46

• haploid, 23

• haploid, 46

What is aneuploidy?

• Abnormal structure of a chromosome.

• Abnormal number of chromosomes in a cell.

• Exchange of chromosomal material between chromosomes.

• More than two sets of chromosomes in a cell.

What is the most likely mechanisms that can cause aneuploidy?

• Mutation.

• Fetilisation.

• Non-disjunction.

• Meiosis.