Sciences Co-ordinated 9-1 0973: B15 - Variation and selection Topical Past Paper Questions
Cambridge IGCSE Sciences Co-ordinated 9-1 (0973) past-paper questions on B15 - Variation and selection, free. This topic is regularly examined across 13 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Humans reproduce sexually. (a) Complete the sentences to describe sexual reproduction in humans. Sexual reproduction involves gametes and fertilisation. Fertilisation is the fusion of the ..... of two gametes to form a ..... which is a diploid cell. Gametes are cells which have 2…
A list of the stages of a process is shown. 1 Choose animals with the desired characteristics. 2 Breed the animals together. 3 Choose the offspring with the desired characteristics and breed the offspring. 4 Repeat over many generations. What is this process called? A asexual rep…
(a) A student investigates antibiotic resistance in one strain of bacteria. They use five different antibiotics on paper discs. The antibiotic discs are placed in a Petri dish with the bacteria and left for three days. Fig. 7.1 shows the results. Fig. 7.1 Identify the antibiotic…
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