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inessss [21]
2 years ago
11

A new pest is found that only feeds on corn plant leaves. Livestock eat corn cobs. Which promoter would you choose if the modifi

ed gene produces toxins that are not safe for livestock to ingest?
Biology
1 answer:
aleksandrvk [35]2 years ago
8 0

Answer:

Promoter 2

Explanation:

Promoter 2 is the best choice because the resistance gene will only be expressed in the leaves of the corn plant. Promoter 3 only expresses genes in the corn roots, so the toxin would not be available in the leaves for the pest to eat. Promoters 1 and 4 would express the resistance gene in the leaves of the corn plant, but the toxins would be expressed in the corn cobs as well, which may then be fed to livestock.

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Ilia_Sergeevich [38]
<span>Sam, a mendalien with black eyes and green skin, has a parent with orange eyes and white skin. Sam has a dominant phenotype expressed but he has a parent with a recessive phenotype which means he has a heterozygote gene.

Carole is a mendalien with orange eyes and white skin. Since Carole express both recessive phenotypes she should be homozygote recessive.

The key to this problem is how Sam dominant gene will be inherited. Since there are two heterozygote genes, it will be 50% dominant gene inherited for each phenotype. Then the result should be: 
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8 0
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3 years ago
Lilah’s family has a large garden in their backyard. after learning about the role of organisms in an ecosystem, lilah compares
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An ecosystem is a self supporting system in which there is a flow of materials and energy.

<h3>What is an ecosystem?</h3>

An ecosystem is a self supporting system in which there is a flow of materials and energy.

Let us now see the role of each organism in the small ecosystem.

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Learn more about ecosystem: brainly.com/question/13979184

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SIZIF [17.4K]

Answer:

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Explanation:b

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