Which of the following statements is/are false?(a) In Lathyrus odoratus long pollen is a dominant character (b) There are four pairs of chromosomes found in Drosophila (c) Linkage is usually complete (d) Mendel's law of independent assortment is limited to genes carried on different chromosome pairs

Statement (c) 'Linkage is usually complete' is false because crossing over between homologous chromosomes during meiosis can break linkage, making it incomplete. Statements (a), (b), and (d) are true: long pollen is dominant in Lathyrus, Drosophila has 4 chromosome pairs, and Mendel's law applies to genes on different chromosomes.