Pretest: Genetic Information and Non-Mendelian Inheritance

Which of the following does NOT belong to the components of DNA?

• Deoxyribose

• Nitrogenous bases

• Phosphate group

• Ribose sugar

Which of the following statements is CORRECT about the genetic information in the nucleus of a cell?

• Gene is made up of a group of DNA.

• Chromosomes are wrapped around by histone proteins to form chromatin.

• DNA is the building block of life.

• Chromosomes are made up of centromere joined together by sister chromatids.

What is a DNA molecule?

• It is composed of a ribose sugar.

• It is a monomer made up of nucleotide.

• It is made up of two strands twisted together forming a double helix.

• The nitrogenous base Guanine always pairs with Thymine while Cytosine pair up with Adenine.

Which is TRUE about chromosomes?

• Human has 46 chromosomes

• Body cells have chromosome numbers 1 to 22

• Body cells have chromosome numbers 1 to 22

• All of the above.

What are the backbones of DNA with two alternating structures?

• Deoxyribose sugar and Phosphorus group

• Deoxyribose sugar and a Phosphate group

• Nitrogenous bases and Hydrogen bonds

• Ribose sugar and sulfate group

What pattern of inheritance is shown when as Carnation pink flower was heterozygous for the petal colors red and white?

• Incomplete dominance

• Codominance

• Multiple Alleles

• Complete Dominance

What Non-Mendelian Pattern is shown when more than two types of alleles available leading for more more than two phenotypes expressed?

• Incomplete dominance

• Codominance

• Multiple Alleles

• not mentioned

Which of the following Non-Mendelian inheritance is demonstrated when the resulting heterozygotes exhibit the traits of both parents?

• Codominance

• Incomplete dominance

• Multiple Alleles

• not mentioned

Which is TRUE about the roan bull that has both the black and white colors?

• The roan bull is homozygous dominant.

• The roan is the intermediate phenotype for the coat color

• This is governed by the Codominance pattern of inheritance

• All of the above.

What is the probability of having a blood type AB child when a man with blood type O marries a woman with blood type AB?

• 0%

• 25%

• 50%

• Cannot be determined