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aleksklad [387]
3 years ago
13

Which of the following is not a characteristic of natural selection?

Biology
1 answer:
cricket20 [7]3 years ago
6 0
Answer is C) Breeding pairs are chosen by humans

In natural selection, breeding pairs are generally determined by the organisms which are most fit to survive and reproduce. Humans do not select which organisms go on to produce offspring, nature does. A, B, and D all describe natural selection. 
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Answer:

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Explanation:

<em>Teratogens</em> may affect the embryo or fetus in a number of ways, causing physical malformations, problems in the behavioral or emotional development of the child, and decreased intellectual quotient (IQ) in the child. Additionally, <em>teratogens</em> may also affect pregnancies and cause complications such as preterm labors, spontaneous abortions, or miscarriages. <em>Teratogens </em>are classified into four types: physical agents, metabolic conditions, infection, and finally, drugs and chemicals.

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Answer:

<em>a. Cross-sectional study</em>

Explanation:

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a versatile cas12k-based genetic engineering toolkit (c12kget) for metabolic engineering in genetic manipulation-deprived strain
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versatile cas12k-based genetic engineering toolkit (c12kget)

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1 year ago
The reproductive cells that have half the number of chromosomes as other cells in the body are called gametes.
Lorico [155]

Answer:

falso

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Las únicas células humanas que no contienen pares de cromosomas son las células reproductoras, o gametos, que portan solamente una copia de cada cromosoma

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The atmosphere and seas of the early earth lacked oxygen. what kind of organisms could not have lived under those conditions?
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