The photograph shows a mother and baby Malayan tapir (Tapirus indicus). They live in the rainforests of southeast Asia. Each gamete of a Malayan tapir contains 26 chromosomes. © Sipa US / Alamy Stock Photo （b）Biodiversity within a species can be measured using genetic diversity． Three melanistic Malayan tapirs have been discovered that have black fur all over their bodies． Melanistic tapirs have two copies of the recessive allele for fur colour and are homozygous． （i）Scientists wanted to determine the heterozygosity index of the Malayan tapir species． Which equation can be used to calculate the heterozygosity index？ （1） （ii）Explain how scientists could determine if a change in the frequency of the recessive allele was occurring over time． （2） ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................

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