A monohybrid cross only involves one trait, for example "shape". A dihybrid cross involves two traits, for example "shape " and "height".
Answer:
Sharp-spined cactus
Explanation:
Given, that N allele is required for the production of spine and S allele will produce sharp sines.
True breeding sharp spined cactus: NNSS
spineless cactus: nn__ ( we can't fix the allele for second gene since it has not been mentioned as true breeding )
Their progeny: NNSS X nn__ = NnS_
So the progeny is going to be sharp spined because both the dominant alleles N and S are present.
Were going to need you to put the multiple choices up too.
Examples
High respiration rates from mass global population
Deforestation
i dont know where the choices are but plant gain energy from sunlight and they use it to make food through photosynthesis.
Hope it helps bro :D
