Whats is another name for a mapple tree

Explain why phospholipid molecules form a bilayer. (3 marks)

Plz ! ive been stuck on this forever

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.