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Inheritance and genetic crosses

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Question 60

A student investigated the genetic inheritance of characteristics in fruit flies (Drosophila).

Table 1

CharacteristicObserved Phenotypes
Wing lengthLong, Short
Body colourGrey, Black

The allele for long wings is dominant. The allele for short wings is only expressed when two copies are present in the genotype.

Which term describes the allele for short wings?

Heterozygous

Homozygous

Gamete

Recessive

Inheritance and genetic crosses Questions

  1. GCSE
  2. /Biology
  3. /Inheritance and genetic crosses