Isabelle's baby was born blind, deaf, and with heart defects and brain damage. most likely isabelle was exposed to during her pregnancy.

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

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.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?