2.5.1 Variation of Species2.5.2 Heredity and Gene Expression
2.5.3 Genetic Code2.5.4 DNA Structure, Replication
and Profiling
Follow-Me – iQuiz
Q. What term is used to describe differences within a population with respect to features such as height?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Explain the term species.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Give one cause of genetic variation.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Genetics is the study of ...
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. True or False. Chromosomes are made of DNA and lipid
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Explain briefly what is meant by a gene?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Give one example of an inherited human characteristic.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. What is meant by genetic screening?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Give two applications of DNA profiling.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. What is meant by non-coding DNA?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Give one structural difference between DNA and RNA.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. What are the two main events in the replication of DNA?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Name the complementary base in RNA for Adenine.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Name a carbohydrate that is a component of nucleotides.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. What does the ‘m’ stand for in mRNA?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. True or False. Organisms of the same species can usually produce fertile offspring.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Name the complementary base in RNA for Cytosine.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Name a component of a nucleotide that is neither a carbohydrate nor a nitrogenous base.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. What is a chromosome?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Give one example of a non-inherited human characteristic.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Explain what is meant by the term DNA profiling?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. True or False. RNA is not found in ribosomes.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. Name the four bases that are found in DNA.
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein
Q. The bases in DNA form a triplet code. What is meant by a triplet code?
Ability to roller skate
DNA opens/unzips & New strands made
FALSE
Eye colour
Examining DNA for a pattern or band to compare
Interbreeding results in fertile offspring
Inheritance; Heredity
Guanine
Forensic science; Paternity; Medical
Phosphate group
Structure found in nucleus composed of DNA or genes;
Hereditary material
Testing people for the presence of a specific gene
Three bases code for one amino acid
Messenger
Variation
Unit of heredity; Code for protein; Section of DNA
TRUE
Uracil
Adenine; Thymine; Guanine; Cytosine
Ribose; Deoxyribose
DNA contains thymine; RNA contains uracil
Sexual reproduction; Gene or chromosome mutation;
Genetic engineering
Does not code for a protein