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4.3 Selective breeding and genetic modification

Why does selective breeding make a desired characteristic more common?

A

Selected organisms are repeatedly bred over many generations, increasing the frequency of their desired alleles.

B

Selected organisms are repeatedly bred, increasing the frequency of every allele in the population.

C

All organisms in the population mutate until they develop the desired characteristic.

D

Organisms with the desired characteristic are bred once, causing all offspring to inherit the desired alleles.

4.3 Selective breeding and genetic modification Flashcards

  1. GCSE
  2. /Biology
  3. /4.3 Selective breeding and genetic modification

Flashcards for Edexcel GCSE Biology 4.3 Selective breeding and genetic modification, covering the key terms, definitions and processes you need to recall for Paper 1 and Paper 2. 27 cards drawn from 4.3.1 Selective breeding and its impact, 4.3.2 Tissue culture, 4.3.3 Genetic engineering overview, 4.3.4 Main stages of genetic engineering, 4.3.5 Advantages and disadvantages of GM organisms, 4.3.6 Agricultural solutions for a growing population, and 4.3.7 Evaluating genetic engineering and breeding, matched to the Edexcel GCSE Biology (1BI0) specification. Recall questions account for roughly 40% of marks at GCSE Biology, so these target the marks you can secure before the paper starts.