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Ierofanga [76]
4 years ago
7

Geneticists studying the gene for lactase did not find any differences in the coding region DNA (the section of DNA with instruc

tions to make the protein) between people who could digest lactose and people who could not digest lactose. After they investigated further, they discovered that the difference between lactose tolerant and intolerant individuals was due to a mutation located in
Biology
1 answer:
ehidna [41]4 years ago
5 0

Answer:

Explanation:

They discovered that the difference between lactose tolerant/persistence and intolerant individuals was due to a mutation located in another neighbouring gene that controls its persistence.

This gene is the MCM6 gene. This gene affects lactase promoter activity likely causing lactase persistence. It is located in a regulatory region upstream of the lactase (LCT) gene.

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snow_tiger [21]

A.) A higher sample size gives more accurate results , is the correct answer.

Explanation:

By examining large sample sizes, Mendel showed that his crosses behaved reproducibly according to the laws of probability, and that the traits were inherited as independent events. Two rules in probability can be used to find the expected proportions of offspring of different traits from different crosses.

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5 0
3 years ago
Where do you find organelles
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4 years ago
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A species whose presence is critical to maintaining the ecological balance is called a/an _____ species.
kow [346]

Answer:

keystone species

Explanation:

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An example of a keystone species is the bee. Bees are very important in pollination of flowering plants and also ensure their survival. This plants serve as home to various insects that are source of food to birds. The removal of bees from this ecosystem would affect the ecological balance of this ecosystem.  

3 0
4 years ago
In 2015, what total percent of U.S. energy consumption was from biomass?
viktelen [127]

Answer:

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Renewable energy in the U.S. through the first half of 2016, including hydro-electric power, biomass, geothermal, wind, provided 16.9 % of electricity generation.  As of 2015, that number was 13.7 percent.

6 0
3 years ago
cane toad, or Rhinella marina, was introduced to the Hawaiian Islands in 1932 by sugar cane farmers. The farmers released the to
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