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____ [38]
3 years ago
13

Jason adds the antibiotic penicillin to a bacterial culture. The bacteria develop genetic modifications in their genome, which g

ives them resistance to the antibiotic penicillin. What caused this genetic modification?
Biology
1 answer:
Aleks [24]3 years ago
3 0
The correct answer is A.
The use of antibacterial drugs can cause modifications in the genetic material of the concerned bacteria. If the genetic material of the bacteria are modify, that means they have undergone mutation. Because the base sequence of the normal and that of the mutated gene is different, antibiotic will not be able to recognize the bacteria again and thus will not be able to attack it. 
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how does the random alignment of homologous chromosomes contribute to genetic variation in a population
SCORPION-xisa [38]

The assortment of homologous chromosomes during meiosis is random and generates genetic variation, the raw material for evolution.

During metaphase I of meiosis, homologous chromosomes are lined up at the equator plate of the cell in order to be separated (assorted) in anaphase I.

The separation of homologous chromosomes during meiosis I is random. Daughter cells receive unique gene combinations from an original parent cell.

Subsequently, haploid cells got from two successive meiotic divisions fuse during fecundation to form a diploid (2n) zygote.

During prophase I, non-sister chromatids interchange genetic material by a process known as recombination. This genetic process also increases genetic variation in daughter cells.

In conclusion, the assortment of homologous chromosomes during meiosis is random and generates genetic variation.

8 0
3 years ago
Can someone please help?
Fiesta28 [93]

Answer:

d

Explanation:

i think it d

5 0
4 years ago
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Suppose the government has imposed a price floor on the market for soybeans. Which of the following events could transform the p
Stolb23 [73]

Answer:

The correct answer is - option A.

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In this case the farmers are farmers use improved, drought resistant seeds, which lowers the cost of growing soybeans which can transform the price floor.

Thus, the correct answer is - option A.

4 0
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Name two earth spheres that interact in the following situation:
Varvara68 [4.7K]
Maybe biosphere and geosphere?
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The first one because ladybugs r apart of the environment and r helping to keep aphids under control

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