The old english bulldog is extinct. to produce
a new english bulldog, dogs having the desired
physical features, but not the aggressive nature
of the old bulldogs, were mated. the result was
a bulldog that was similar in appearance to the
extinct bulldog, but without its fierce nature.
which technique was most likely used to
develop this new variety of dog?
(1) cloning
(2) inducing mutations
(3) genetic engineering
(4) selective breeding
Answers: 1
Biology, 21.06.2019 19:30
Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.
Answers: 1
Biology, 22.06.2019 03:00
Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.
Answers: 2
Biology, 22.06.2019 18:30
There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell
Answers: 1
Biology, 22.06.2019 19:30
Which of the following statements is true regarding a basic amino acid? a.) the hydrophilic r group of a basic amino acid will be located on the interior of a protein b.) the positively charged r group of a basic amino acid could bind dna c.) the r group of a basic amino acid would only be able to form covalent bonds with other molecules d.) a basic amino acid would be considered both polar and hydrophobic e.) all of the above
Answers: 1
The old english bulldog is extinct. to produce
a new english bulldog, dogs having the desired<...
a new english bulldog, dogs having the desired<...
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