Questions from Genetics


Q: Under what conditions is lac repressor bound to the lac operon?

Under what conditions is lac repressor bound to the lac operon?

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Q: An animal breeder had a herd of sheep with a mean weight

An animal breeder had a herd of sheep with a mean weight of 254 pounds at 3 years of age. He chose animals with a mean weight of 281 pounds as parents for the next generation. When these offspring rea...

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Q: The trait of blood pressure in humans has a frequency distribution that

The trait of blood pressure in humans has a frequency distribution that is similar to a normal distribution. The following graph shows the ranges of blood pressures for a selected population of people...

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Q: The abdomen length (in millimeters) was measured in 15 male

The abdomen length (in millimeters) was measured in 15 male Drosophila, and the following data were obtained: 1.9, 2.4, 2.1, 2.0, 2.2, 2.4, 1.7, 1.8, 2.0, 2.0, 2.3, 2.1, 1.6, 2.3, and 2.2. Calculate t...

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Q: You conduct an RFLP analysis of head weight in one strain of

You conduct an RFLP analysis of head weight in one strain of cabbage; you determine that seven QTLs affect this trait. In another strain of cabbage, you find that only four QTLs affect this trait. Not...

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Q: From an experimental viewpoint, what does it mean to say that

From an experimental viewpoint, what does it mean to say that an RFLP is associated with a trait? Let’s suppose that two strains of pea plants differ in two RFLPs that are linked to two genes governin...

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Q: Let’s suppose that two strains of pigs differ in 500 RFLPs.

Let’s suppose that two strains of pigs differ in 500 RFLPs. One strain is much larger than the other. The pigs are crossed to each other, and the members of the F1 generation are also crossed among th...

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Q: Outline the steps you would follow to determine the number of genes

Outline the steps you would follow to determine the number of genes that influence the yield of rice. Describe the results you might get if rice yield is governed by variation in six different genes....

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Q: In a wild strain of tomato plants, the phenotypic variance for

In a wild strain of tomato plants, the phenotypic variance for tomato weight is 3.2 g2. In another strain of highly inbred tomatoes raised under the same environmental conditions, the phenotypic varia...

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Q: The average thorax length in a Drosophila population is 1.01

The average thorax length in a Drosophila population is 1.01 mm. You want to practice selective breeding to make larger Drosophila. To do so, you choose 10 parents (5 males and 5 females) of the follo...

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