The parasite can live<span> in the environment for many months and contaminate soil, water, fruits and vegetables, sandboxes, grass where animals graze for food, litter boxes, or any place where an infected cat may have defecated. </span>Toxoplasmosis<span> is an infection caused by a microscopic parasite called </span>Toxoplasma<span> gondii.</span>
<span>The detection of chromosomal abnormalities occurs at the G1 stage. This is when the cell has to commit to the process of the rest of the cycle. Thus, if any abnormalities are detected the process can be delayed or stopped entirely.</span>
The most important trait that modern fish had developed was the transformation of their skeleton from cartilage to bones.<span> This was called </span><span>ossification. </span><span>Eventually, bony fishes and sharks dominated the waters because their body structure development which helped them as swimmers is advanced compared to earlier fishes. </span>
<span>By using genetic engineering techniques to transform bacteria that produce the enzyme I will extract the DNA from the cells of different people who can make the enzyme digestion. Then will cut the DNA with a restriction enzyme, and use gel electrophoresis and a DNA probe to locate the gene. By using the polymerase chain reaction I will copy the gene. Thereafter, I will choose a plasmid that has an antibiotic resistance genetic marker, and cut the plasmid with the same restriction enzyme used to cut out the human gene.
Later I will insert the copies of the human gene into the plasmids and allow the bacterial cells to take in the plasmids. Later, I will allow the bacteria to grow in a culture containing the antibiotic. And hence, these bacteria will make the digestion enzyme.</span>
Some
unique characteristics of the chordata are the following: Notochord
is present, Dorsal hollow nerve cord is present,paired pharyngeal
gill slits are present, and post anal tail is present. The
differences in Nonchordates are the following: Notochord is absent,
Solid nerve cord generally ventral/lateral, post anall tail is
absent, pharyngeal gill slits are absent, Dorsal hear.
Answer:
A) Chordates have postanal tails.
<span>I
hope it helps, Regards.</span>
