A certain sea slug, Elysia chlorotica, "steals" chloroplasts from algae it normally feeds upon, and then uses the chloroplasts t
o conduct photosynthesis during times of low food availability. Scientists found that the slug carries a chloroplast-maintenance gene in its genome, a gene identical to one found in the algae. The process by which the slug first acquired the gene is called what?
Horizontal gene transfer or lateral gene transfer is when an organisms of different species can acquire a gene from a different one. This process is well understood in bacteria and is responsible for the appearence of antibiotic resistant bacteria. Bacteria can take DNA fragments through a process known as transformation, but this is less common in eukaryotes. Gene transfer agents like viruses could carry the gene from one specimen to the other. Another way could be Horizontal transposon transfer but the exact mechanisms behind it are still under research.
A culture represents the beliefs and practices of a group, while society represents the people who share those beliefs and practices. Neither society nor culture could exist without the other.
A toboggan is a simple sled traditionally used by children. It is well adapted to sliding down open slopes, where its large surface rides easily on loose, fluffy snow.
The genetic
material <span>that children inherit from their parents </span>and the physical
similarities of children to their parents are the evidence for evolution. Comparative
anatomy is used to show relatedness from generation to generation by having
similar DNA sequences or patterns and traits.
