a man has brown eyes. he marries a heterozygous woman with blue eyes. if blue dominates, what is the genotype?

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

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.

What organelle other than the nucleus houses dna in a eukaryotic cell?