Since the early 1990s, geneticists have produced ____________ crops that yield fruits and vegetables commonly found in U.S. supermarkets. A) large harvest B) genetically modified C) mutationally induced D) transgenically reduced

Answers

Answer 1

Answer:

Answer:

B) genetically modified.

Explanation:

Genetically modified foods are foods that are produced from organisms with DNA that has been modified through genetic engineering. This results in food that is more appetizing, more high-yielding or more resistant than food that has not been modified. This type of food is created in such a way in order for breeders to have better control over the positive traits of the organisms. These methods are similar to the more traditional selective breeding and mutation breeding.

Answer 2

Answer: The correct answer is B- genetically modified.

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In mice, the autosomal locus coding for the β-globin chain of hemoglobin is 1 m.u. from the albino locus. Assume for the moment that the same is true in humans. The disease sickle-cell anemia is the result of homozygosity for a particular mutation in the β-globin gene.a. A son is born to an albino man and a woman with sickle-cell anemia. What kinds of gametes will the son form, and in what proportions? (2 points)b. A daughter is born to a normal man and a woman who has both albinism and sickle-cell anemia. What kinds of gametes will the daughter form, and in what proportions? (2 points)c. If the son in part a grows up and marries the daughter in part b, what is the probability that a child of theirs will be an albino with sickle-cell anemia? (1 point)

Answers

Answer:

Explanation:

The disease sickle cell anemia is caused by homozygosity for a mutation:

SS or Ss genotypes: normal
ss: anemia

Albinism is a recessive trait:

AA or Aa: normal
aa: albinism

The genes S/s and A/a are linked and separated by 1 map unit.

Remember that 1 mu means that 1% of the gametes produced by an individual will be recombinant.

a) Albino man (Sa/Sa) X woman with sickle-cell anemia (sA/sA)

Son: Sa/sA

The gametes he can produce are:

Parentals: Sa and sA
Recombinant: SA and sa

Since the frequency of recombination is 1% (or 0.01), each recombinant gamete has a frequency of 0.005 (since there are two possible recombinant gametes).

The parental gametes will appear with a frequency of 0.99, each of them with a frequenct of 0.495.

b) Normal man (SA/SA) X woman with anemia and albinism (sa/sa)

Daughter: SA/sa

The gametes she can produce are:

Parentals: SA (0.495) and sa (0.495)
Recombinant: Sa (0.005) and sA (0.005)

c) Son (Sa/sA) X daughter (SA/sa)

In order for them to have an albino child with anemia (sa/sa), the gamete sa from each parent had to be produced and fused into the zygote. Since the production of gametes by each parent is an independent event, the probability of having sa/sa offspring can be calculated as:

Prob. sa gamete son × Prob. sa gamete daughter = 0.005 × 0.495 = 0.0025

The probability that a child of theirs will be an albino with sickle-cell anemia is 0.25%

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Answer:

Physical science is the study of the inorganic world. That is, it does not study living things.

Explanation:

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Answers

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Answer:

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Explanation:

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Answers

Answer:

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Answer:

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Explanation:

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Answer: disruptive

Explanation:

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