a species of fly has two alleles for the length of there legs. The allele for long legs is dominant and is represented by p. the allele for short legs is recessive and represented by q. if 21 of 100 organism

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That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

The basic repeating unit of nucleic acids are known as nucleotides. a nucleotide consists of three distinct chemical groups.