Questions and Answers

Describe that the sequence of bases in a gene determines the sequence of amino acids needed to make a specific protein (knowledge of the details of nucleotide structure is not required)

Explain that DNA controls cell function by controlling the production of proteins, including enzymes

Define a gene as a length of DNA that codes for a protein

Investigate and describe examples of continuous and discontinuous variation

Describe that discontinuous variation results in a limited number of phenotypes with no intermediates, including ABO blood groups, seed shape and seed colour in peas

Describe variation as differences between individuals of the same species

State that some viruses can pass across the placenta and affect the fetus

Identify, on diagrams, the placenta and umbilical cord and describe their functions in relation to the exchange of dissolved nutrients, gases and excretory products between the blood of the mother and the blood of the fetus (structural details are not required)

State the functions of the amniotic sac and the amniotic fluid