Genetics Multiple Choice Questions and Answers

21. Carriers of the colour-blindness trait include:

1. Men who are heterozygous for the trait.
2. Men who are homozygous for the trait.
3. Women who are heterozygous for the trait.
4. Women who are homozygous for the trait.

22. Which of the following descriptions of chromosomes is not correctly matched?

1. Metacentric chromosome arms are almost equal in size.
2. Submetacentric chromosome arms are slightly different in size.
3. Acrocentric chromosome arms are identical in size.
4. Telocentric there is only one chromosome arm.

23. When cancer cells gain the ability to move independently and invade other tissues, they are said to have:

1. Mobilized.
2. Evolved.
3. Metastasized.
4. Metamorphed.

24. A ______ made inside the nucleus of a cell, associates with proteins to form ribosomes.

1. mRNA
2. rRNA
3. tRNA
4. All of the above

25. If you performed a laboratory analysis of DNA, you would find that the amount of adenine is ____________ the amount of thymine.

1. much greater than
2. much less than
3. about the same as
4. shows no relationship

26. The most common form of severely affected people who are havingmore than 1000 repeats of the CTG triplet are called

1. Myotonic dystrophy
2. Fragile X syndrome
3. Retinoblastoma

27. Histone four (H4) consists of 102 aminoacids and it has

1. Negative charge
2. Positive charge
3. Neutral
4. None of these

28. In addition of histone protein chromatin contains an approximately equal mass of a wide variety of

1. Non-histone protein
2. RNA
3. Positive charge protein
4. Unknown protein

29. Which blood type would not be possible for children of a type AB mother and a type A father?

1. O
2. A
3. B
4. AB

30. Proteins are made of amino acids linked together by specific bonds called

1. Peptide bonds
2. Nitrogen bonds
3. Hydrogen bonds
4. Hydrogen & Nitrogen bonds