Genetics - Week 1

What is the function of DNA?

• To store genetic information

• To produce proteins

• To control the expression of traits

• To make up the structure of cells

What is the role of nucleotides in DNA?

• To store genetic information

• To form the DNA double helix

• To join the nitrogenous bases

• To produce proteins

Which nitrogenous bases pair together in DNA? (select all that apply)

• Adenine and Thymine

• Cytosine and Guanine

• Adenine and Cytosine

• Thymine and Guanine

What is the phenotype of an organism?

• The physical presentation of an organism's trait

• The specific combination of alleles an organism has

• An organism with two of the same alleles for a trait

• An organism with two different alleles for a trait

What is the genotype of an organism with two different alleles for a trait?

• GG

• gg

• Gg

• Codominance

What is the function of proteins in cells?

• To store genetic information

• To produce nucleotides

• To make up the structure of cells

• To control the expression of traits

What is the complete sequence of DNA called?

• Genome

• Chromosome

• Nucleotide

• Allele

How many base pairs are there in the human genome?

• 1 million

• 1 billion

• 3 billion

• 5 billion

What is the structure of chromatin?

• Fibres of DNA in its condensed form

• Structure composed of DNA as a condensed form of chromatin

• Visible only during cell division

• Contains the same sequence of genes as another chromosome

DNA instructs both the development and functions of organisms.

• True - both

• False - neither

• only development

• only functions