Can a man and women with attached earlobes have a child with free earlobes? Explain?

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

As a small change in a person's dna can cause a genetic disorder

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.