What tool do geneticists use to predict the outcome of genetic crosses? a. karyotype b. punnett square c. centrifuge

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

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.

9. the history of life on earth is recorded in