Which definitions of diploid and haploid are true for typical eukaryotic cells? 1 diploid – any cell with an even number of homologous chromosomes 2 diploid – any cell with two copies of each homologous chromosome 3 haploid – any cell with half the diploid number of homologous chromosomes 4 haploid – any cell with one copy of each homologous chromosome

(a) Describe the types of gene mutation that can occur and explain how some mutations can lead to a shortened polypep…

Huntington's disease is caused by a dominant allele of the gene that codes for the production of the huntingtin prote…

The sweet pea, Lathyrus odoratus, is a flowering plant that grows in many parts of Europe. The inheritance of flower …

Lysozyme is an antibacterial enzyme that was discovered in 1921 by Alexander Fleming, the scientist who discovered pe…

Variation exists in populations of a species and this may provide the opportunity for evolution to occur.

In plants, stomata open and close in response to changes in environmental conditions. Explain why stomata need to ope…