Do medium sized rats in the petstore grow?
in the pet store thet have medium and small sized rats. Does this mean the rats are babies or are they not going to grow into normal sized rats?
Suggestion by Lorelai [(Official)]
Yes they grow into regular sized rats.
As sad as it is, stating them as ‘small, medium, large’ sized rats are just a sales gimick & for people who feed them to snakes.
Suggestion by angeshades52
Yes they grow and she is right there size is really showing there age!!!!!! i.e the smaller they are the younger they are, the bigger they are the older they are!!!!!!
Suggestion by Eraser Eraser
The rats that have labels like “jumbo” or “medium” are only a way to describe the current size of the rat. These rats are sold as food for people’s snakes and reptiles, so the size is a way of identifying the amount of food the rat represents. But the smaller rats are just younger. Usually, those considered medium are in their adolescent stage.
Rats do not actually come in different sizes. All rats are rats, and are all the same size in adulthood. Obviously, since all are different, some will grow slightly larger or smaller than others, but they are still all the same type of rat.
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Transformation of competent E.coli: how many colonies would grow in LB medium w/o antibiotics?
We did this experiment of transformation of E.coli (chemical method+thermal shock and incubation overnight) with certain recombinant plasmid DNA, which had bla gene, resistance to ampicillin.
The thing went a bit wrong and the guy that supervised us told to think of any number between 73 and 200, which would have been colonies in a dish of transformed cells and with antibiotics.
Question is, how many colonies approx. there could have grown in LB medium without antibs?
Suggestion by MOZHIARASU
How many bacteria which takes the bla gene in medium containing antibiotic. but you said no antibiotics have been added. So all the bacteria will grow, based on the concentration of bacteria per ml and how much u inoculated.
each bacteria will grow into a colony
if 4 bacteria 4 colonies or if 100, 100 colonies
Know better? Leave your own answer in the comments!