Explain why an area with extreme temperatures like one in the Arctic would be resistant to invasion by a biotic disturbance.

answer; i believe the correct answer is (sporophyte);

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.