What do both cells and organisms have in common?
A) They produce waste
B) They produce energy
C) They perform photosynthesis
D) They perform cellular respiration

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

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what

All phases of matter may have a fixed mass