What is the approximate population of humans on earth now
a.6 billion
b.3 billion
c.1 billion
d.60 billion

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.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

What do all of the above organisms have in common