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Ostrovityanka [42]
3 years ago
10

A student wishes to test whether adding a substance

Biology
1 answer:
Artyom0805 [142]3 years ago
3 0

Answer:

C  Temperature at which the  mixture freezes

Explanation:

Measuring the temperature at which the mixture freezes provides a good way for the student to arrive at her conclusion.

  • The variable being tested for in this experiment is the freezing point of the water anti-freeze mixture.
  • The dependent variable which is the freezing point is of prime concern.
  • Amount of the antifreeze added is the independent variable. It is the cause of the phenomenon desired to be observed in the experiment.
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polet [3.4K]

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Hybridization - a method that unionizes gametes of differing genes to create a new individual

Recombinant DNA - cultured DNA molecules from different biological sources

Selective breeding - a process of breeding organisms because of their specific traits

Explanation:

In biology, hybridization is the process of creating a hybrid by combining gametes of different species or varieties. An example of a hybrid is a liger - an offspring of a lion and a tiger.

Recombinant DNA is DNA created in the process of genetic recombination. Genetic material from multiple sources is combined, creating sequences that do not occur in the genome naturally.

Selective breeding is the process of breeding organisms with desirable characteristics. For example, a good dog breeder will breed only two completely healthy dogs in order to make sure that the puppies don't have any health issues often associated with the breed.

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3 years ago
In the generation of most anions, the energy change (kj/mol) that _______ an electron is ________.
stepan [7]

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4 years ago
What does biologist study?
Elza [17]

Answer:

<h3>Biologists study humans, plants, animals, and the environments in which they live. They may conduct their studies--human medical research, plant research, animal research, environmental system research--at the cellular level or the ecosystem level or anywhere in between.</h3>
5 0
3 years ago
4. DNA typing was first described in 1985 by English geneticist
irga5000 [103]

Answer:

2. Alec Jeffreys

Explanation:

'DNA fingerprinting' or DNA typing (profiling) as it is now known, was first described in 1985 by an English geneticist named Alec Jeffreys. Dr. Jeffreys found that certain regions of DNA contained DNA sequences that were repeated over and over again next to each other.

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