Having the ability to roll or curl the tongue up along both sides to form a tube is a dominant trait. Which diagram represents the chromosomes in a person that does not have this ability? 2 chromosomes are labeled Upper H and Upper H.

2 chromosomes are labeled Upper H and h.

2 chromosomes are labeled h and h.

1 chromosome is labeled Upper H and the other chromosome is not labeled.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?