The DNA conformation changes when ecori is applied to a big, complicated DNA sample, changing from a rod-like to a bent shape C.
<h3>Describe Eco-RI.</h3>
The bacterium Escherichia coli contains the globular type II restriction enzyme known as Eco-RI endonuclease (Eco-RI). Like many other endonucleases found in bacteria and archaea, this one serves as a defense mechanism to keep the cell from being overrun by foreign DNA.
<h3>Describe EcoRV-HF.</h3>
EcoRV-HF was designed for lower star activity, although it has the same specificity as EcoRV . Cleaves in the tetracycline resistance gene of pBR322 to leave a ligatable blunt end. some combinations of overlapping CpG methylation are impaired.
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Where Ao = starting amount, At = amount after time t, and k = rate constant
<span>You are given that the half-life is 33 seconds </span>
<span>Calculate the rate constant </span>
<span>ln(2/1) = kx33 sec </span>
<span>0.693 = kx33 </span>
<span>k = 0.0210 s^-1 </span>
<span>Now calculate the amount left after 43.2 sec </span>
<span>ln(100%/A1%) = 0.0210 x 43.2 </span>
<span>ln(100/A1) = 0.9074 </span>
<span>100/A1 = 2.478 </span>
<span>A1 = 40.4%</span>
The tadpoles take their food from the yolk of an egg. The egg yolk is equivalent to the placenta. The placenta attaches itself to the uterus to provide the developing fetus with blood and oxygen.
I believe the gametes are to male and female reproductive cells as Zygotes are to human "blueprints".
Gamete are the cells containing only one set of dissimilar chromosomes, or half the genetic materials necessary to form a complete organisms. They are formed through meiosis, in which the cell undergoes two fission. The gametes combine during the process of fertilization to form a zygote which then undergoes multiple cell divisions and differentiation to form an embryo. <span />