Trivia Quiz On Genetics Revision
Have you been keeping your nose in a book and revising the knowledge you’ve been picking up on genetics at school? You might think you know your stuff, but we’ll see if you can put your money where your mouth is in the following quiz and answer all of the questions on genetics – the topic which allows us to look at our genetic variation, genes, and heredity. Good luck!
- 1.What is a dominant allele?
- A.
A dormant gene that is never expressed
- B.
The allele that will always be expressed if present
- C.
The allele that will only be expressed if there are two present
- 2.If blue eye colour (e) is recessive to brown eyes (B), what would be the genotype of a brown eyed person?
- A.
Bb or BB
- B.
Bb or BB Bb or BB
- C.
Bb or Bb
- 3.If blue eye colour (e) is recessive to brown eyes (B) and two heterozygous parents have a child, what is the chance that the childs phenotype will be blue eyed? *Hint* Try a Punnett square.
- A.
100%
- B.
75%
- C.
50%
- D.
25%
- 4.If blue eye colour (e) is recessive to brown eyes (B), what is the genotype of a purebred brown eyed person
- A.
BB
- B.
Bb
- C.
Bb
- 5.What is a phenotype?
- A.
The genetic code for a trait
- B.
The physical expression of a trait
- C.
A new type of pen
- D.
The original cell of an organism
- 6.What are the components that make up the structure of DNA
- A.
Meiosis and Mitosis
- B.
A, T, C
- C.
Phosphate group, pentose sugar, nitrogen base
- D.
Cell, nucleous, membrane
- 7.How many chromosomes are contained in the sperm of a human?
- A.
12
- B.
23
- C.
46
- D.
92
- 8.How many chromosomes are present in the zygote from which a human grows
- A.
12
- B.
23
- C.
46
- D.
92
Questions: 14 | Attempts: 24963 | Last updated: Mar 22, 2022
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