What is a test cross

1 answer:

7 0

It is a mating in which an individual showing a dominant phenotype is crossed with an individual showing its recessive phenotype. In a test cross, the unknown individual must be of a dominant phenotype because if the phenotype is recessive the genotype will have to be homozygous recessive.

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7. Which of the following is NOT a form of absolute dating? (1 point)

Neporo4naja [7]

Answer:

Explanation:

Absolute dating is defined as the method used to determine the age of biotic or abiotic things on a specified chronology in geology and archaeology.

Layers of the soil are used to determine the age of a geologic event is not a form of absolute dating because the deepest river deposits in the specific basin is used to determine the geological event.

So, the deposits of soil are used to tell the the age of a geologic event and not the layers of soil.

Hence, the correct option is C.

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C clouds

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A scientist discovered a new antibiotic and wanted to know if it would be effective against group A Streptococcus bacteria. He d

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An experiment is a process where the a scientist tests and draws their evidence and data from. Hence, this process is where the hypothesis be supported or negated.

Variables are traits, factors, or characteristics that either manipulated or measured being the subject to become the data.
The independent variable is B.
<span>the presence of the new antibiotic</span>

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3 years ago

How do fish live in the nature without dying out of eating all the time?

kvv77 [185]

Answer:

Fish not only live in water, but they get oxygen from water. They breathe by taking water into their mouths and forcing it out through gill passages

Explanation:

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A mutation in the operator region of the trp operon can prevent the trp repressor from binding to this operator. When these muta

Brilliant_brown [7]

Answer:

d. Tryptophan would bind to the repressor

Explanation:

However,the repressor would not be able to bind to the operator and switch off transcription.The cell would still be making tryptophan even though it is being supplied by the medium in which it is growing.This is a waste of energy.

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