Diploid (2n) organisms that reproduce sexually produce haploid (n) gametes. Some plants, such as wheat, can produce diploid or haploid gametes. These gametes can fertilise other diploid or haploid gametes. Which statements are correct for plants like these? 1 Diploid gametes may be produced by a fault in the reduction division (meiosis). 2 The offspring will always show an increased chromosome number. 3 The offspring could be either 2n, 3n or 4n. 4 The chromosome number could, in theory, increase with each generation.

Which definitions of diploid and haploid are true for typical eukaryotic cells? 1 diploid – any cell with an even num…

Which statements about a diploid cell are correct? 1 can divide by mitosis to repair itself 2 has two complete sets o…

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

The sinoatrial node, atrioventricular node and the Purkyne tissue have important roles in the cardiac cycle.

Respiration is a process that results in the synthesis of ATP. The ATP can be used within the cell for energy-requiri…

Aerobic respiration occurs when oxygen is available. A much greater energy yield is obtained from aerobic respiration…