Genetics: Genes And DNA Trivia Quiz

21 Questions | By Christyn | Last updated: Mar 21, 2022 | Total Attempts: 81

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Many people get confused when they hear the word DNA and Genes used differently, and this is because they don’t know that DNA is chemicals that are found within the genes of a person. How much do you know when it comes to the topic of genes? Take up the test below and get to revise for the test before they fall due adequately. All the best!

Questions and Answers

1.

A gene that produces no detectable product is referred to as
- A.
  
  An amorph
- B.
  
  A trait
- C.
  
  An inhibitor gene
- D.
  
  An allele
2.

The pyrimidine bases found in DNA are
- A.
  
  Thymine and adenine
- B.
  
  Cytosine and adenine
- C.
  
  Thymine and cytosine
- D.
  
  Adenine and guanine
3.

Genetic information is transmitted by the transcription of DNA to
- A.
  
  Ribosomes
- B.
  
  DNA
- C.
  
  MRNA
- D.
  
  TRNA
4.

The structure of human chromosomes can best be described as
- A.
  
  Linear strands of DNA wound around histones
- B.
  
  Linear strands of RNA wound around histones
- C.
  
  Tertiary structure of RNA wound around histones
- D.
  
  Quaternary structure of DNA wound around histones
5.

Mitosis is defined as
- A.
  
  Reduction division during gametogenesis
- B.
  
  Cell division in somatic tissue during which duplication occurs
- C.
  
  The result of crossing over
- D.
  
  The progeny of 2 contrasting parents
6.

The regions of DNA that are translated into amino acid sequences are called
- A.
  
  Introns
- B.
  
  Texeco
- C.
  
  Histones
- D.
  
  Exons
7.

The product of meiosis is
- A.
  
  Gametes with the same genetic complement as the mother cell
- B.
  
  Gametes with one half the genetic complement of the mother cell
- C.
  
  Cells identical to the mother cell
- D.
  
  Gametes with twice the genetic complement as the mother cell
8.

The pyrimidine bases found in RNA are
- A.
  
  Adenine and guanine
- B.
  
  Adenine and thymine
- C.
  
  Cytosine and uracil
- D.
  
  Thymine and uracil
9.

A triplet set of nucleotides is a
- A.
  
  Template
- B.
  
  Helix
- C.
  
  Codon
- D.
  
  Base
10.

When the loci are on different chromosomes they are said to be in
- A.
  
  Cis position
- B.
  
  Homozygous position
- C.
  
  Trans position
- D.
  
  Yoga position
11.

Mr. Smith was admitted to your institution for surgery. The physician ordered 4 units of LRBC's. Mr. Smith's pre-surgical testing shows Anti-EA, anti-LO, anti-VB. The antigen frequencies for these new antibodies are EA positive = 35%; LO positive = 55%; VB positive = 20%. How many units will you need to screen to find four compatible units.
- A.
  
  4 units
- B.
  
  23 units
- C.
  
  110 units
- D.
  
  18 units
12.

The simultaneous transmission of non-allelic genes through successive generations violates Mendel's Law of Independent Assortment. This phenomenon is termed
- A.
  
  Incomplete dominance
- B.
  
  Crossing over
- C.
  
  Linkage
- D.
  
  Polymorphism
13.

In Mendels Law of Separation, the first filial generation is
- A.
  
  Homozygous
- B.
  
  Heterozygous
- C.
  
  Recessive
- D.
  
  Autologous
14.

A father carries the Xga trait and passes it on to all his daughters , but none of his sons. The type of inheritance that this represents is
- A.
  
  Autosomal dominant
- B.
  
  Autosomal recessive
- C.
  
  X-linked dominant
- D.
  
  X-linked recessive
15.

A normal man has 4 daughters, 4 sons, and 12 grandchildren. A daughter and a son have inherited a certain disease but the grandchildren are unaffected. This is an example of
- A.
  
  Sex-linked dominant
- B.
  
  Autosomal recessive
- C.
  
  Autosomal dominant
- D.
  
  Non-paternity
16.

Given the following antigen typings what must the genotype of the father bePaternal grandfather: DcceePaternal grandmother: DCceeMother: dcceeFather: DCceeChild 1 DCceeChild 2 Dccee
- A.
  
  R1r
- B.
  
  RoR1
- C.
  
  Ror'
- D.
  
  Rr
17.

If a female is a carrier for a genetic disease and she has children with a normal male , the effect of the offspring would be:
- A.
  
  1 of 2 sons will be affected
- B.
  
  All sons will be affected
- C.
  
  All daughters will be carriers
- D.
  
  All sons will be carriers
- E.
  
  All of the above
18.

A woman with blood group A marries a man of blood group O. The first child is blood group O. The mother's most probable genotype is:
- A.
  
  AB
- B.
  
  Can't be determined with this information
- C.
  
  AO
- D.
  
  AA
19.

The Rh testing on a donor unit was negative at IS. The tube was incubated at 37 C for 15 minutes. The tube was centrifuged and read macroscopically and was negative. The tube was then washed 3 X with normal saline and 2 drops of AHG were added. After centrifugation, the tube yiekde3d a 2+ reaction. How is this donor unit labelled?
- A.
  
  Weak D positive
- B.
  
  Rh positive
- C.
  
  Rh negative
- D.
  
  Rh variable
20.

Where is the Rh antigen located relative to the red cell membrane?
- A.
  
  Centrally
- B.
  
  It is not known at this time
- C.
  
  Within the cytoskeleton
- D.
  
  Integrally
21.

To perform Rh slide typing, you must
- A.
  
  Use IgM saline anti-D
- B.
  
  Have a 40-50% concentration of cells
- C.
  
  Use Rh control serum
- D.
  
  Use washed red cells