Genetic information describing the characteristics of an organism is found in which of the following?

Nuclei

Membranes

Cilia

Ribosomes

Answer and Explanation

The Correct Answer is A

Nuclei. Genetic information describing the characteristics of an organism is found in the nuclei of its cells. The nucleus contains the organism's DNA, which carries the genetic information that determines its traits.

B. Membranes are structures that surround and enclose cells and organelles, but they do not contain genetic information.

C. Cilia are hair-like structures that protrude from the surface of some cells and are involved in movement, but they do not contain genetic information.

D. Ribosomes are organelles that are involved in protein synthesis, but they do not contain genetic information.

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Correct Answer is B

Explanation

The unknown genotype is Aa. This can be inferred from the Punnet square, which shows that half of the oﬀspring are Aa and half are aa. This indicates that the unknown parent must have one dominant allele (A) and one recessive allele (a), making its genotype Aa.

The other options are not correct because they do not match the results shown in the Punnet square. If the unknown genotype was aa or AA, all of the oﬀspring would have the same genotype as their parent. If the unknown genotype was a, it would not be a valid genotype as it only has one allele.

A. 0.00001 B. 5 C. 100,000 D. 50

Correct Answer is C

Explanation

The correct answer is c. 100,000. The pH scale is a logarithmic scale, which means that each change of one pH unit represents a tenfold change in the hydrogen-ion concentration. A pH 4 solution has a hydrogen-ion concentration that is 10^5 (or 100,000) times greater than that of a pH 9 solution.

A. 0.00001 is the hydrogen-ion concentration of a pH 9 solution as compared with a pH 4 solution.

B. 5 is the diﬀerence in pH units between a pH 4 solution and a pH 9 solution.

D. 50 is not the correct answer.

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Genetic information describing the characteristics of an organism is found in which of the following?

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Naxlex Comprehensive Predictor Exams

Unknown a Aa aa a Aa aa An organism with an unknown genotype is crossed with another organism that shows the recessive trait (aa). The Punnet square above shows the results. Which of the following is the unknown genotype?

Correct Answer is B

Explanation

How many times stronger is the hydrogen-ion concentration of a pH 4 solution as compared with a pH 9 solution?

Correct Answer is C

Explanation

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