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3 years ago

What are the genotypic differences between F-, F+ and Hfr cells?

Biology

1 answer:

Kitty [74]3 years ago

5 0

Answer:

The fertility factor or the F factor signifies a plasmid in some bacteria, which allows the conduction of genetic substance from a donor cell to the recipient by the process of conjugation, leading to recombination.

The genotypic difference between the F- cells, F+ cells, and the Hfr cells are that the F- cells are devoid of the F factor, the F+ cells possess autonomous F factor, that is, a segment of DNA, which can replicate autonomously in the cell. In case of Hfr, the F factor is integrated into its chromosomal DNA, thus, they carry an integrated F factor.

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Explain the following Genetics Evolution Variation

NARA [144]

Answer:

genetics;the study of heredity and the variation of inherited characteristics.

evolution;evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection

variation;a change or difference in condition, amount, or level, typically with certain limits

Explanation:

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3 years ago

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Polymerization and the break down of a polymer are two opposite reactions. What role does a water molecule play in both of them?

ladessa [460]

In the process of polymerization, a chain of similar smaller molecules called monomer join together to create very large molecules called polymer. Through this chemical reaction, water is created as a by-product. In contrast to hydrolysis or breaking down of polymers, a water molecule is used to break the covalent bond that hold the components of a polymer.

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3 years ago

In an experimental study of the effect of copper deficiency on coat color in bicolored juvenile rats, the independent variable i

lana [24]

Answer:

amount of copper

Explanation:

The independent variable would be the amount of copper fed into the experimental rats.

An independent variable during an experiment is a variable whose value is not dependent on any other variable being measured in the experiment.

The value of an independent variable is not changed by any other variable in an experiment. In actual fact, the effect of the independent variable is being tested on other variables (dependent variables) in the experiment.

Hence, in an experimental study of the effect of copper deficiency on coat color in rats, the amount of copper fed into the system of the rats will be varied and the effects of this variation on the coat color of the rats would be observed by measuring relevant variables. Therefore, the amount of copper is the independent variable.

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3 years ago

GLUTs are integral membrane proteins that assist in the facilitated diffusion of glucose into and out of cells. What reaction in

krok68 [10]

Answer:

i dont know that one im sorry

Explanation:

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2 years ago

The relaxation response technique is a stress reduction technique that combines elements of relaxation and ________.

baherus [9]

Answer:

meditation

Explanation:

The relaxation response technique is a stress reduction technique that combines elements of relaxation and meditation. This was a technique made by Dr. Herbert Benson as a treatment for a wide range of stress-related disorders. Parts of the technique include sitting comfortably with eyes closed while doing a series of breathing exercises. Which are also methods used in meditation.

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3 years ago