27 d
In a perfectly controlled laboratory environment, a pure-breeding fish with a 23-mm tail was crossed to a
pure-breeding fish with a 15-mm tail. In the F1, all individuals had tails of an intermediate length: 19 mm.
If tail length is a typical polygenic trait controlled entirely by the equal and additive effect of two
unlinked genes, each with two alleles ("+" and "-"), what phenotypic ratios do you expect to find in the
F2?
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the question isn't complete here so i can't right an answer '_'

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.