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Leona [35]
3 years ago
8

Which of the following best describes the biological role of the lac operon?

Biology
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

D. It ensures that bacterial cells produce lactose only when no other food sources are available.

Explanation:

E. coli uses three enzymes to produce lactose. The genes for these three enzymes are found in lac operon.

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Where does antibiotic resistance come from?
inessss [21]

Answer:

Antibiotic resistance happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them. That means the germs are not killed and continue to grow. Infections caused by antibiotic-resistant germs are difficult, and sometimes impossible, to treat.

Explanation:

3 0
3 years ago
Tortoise shell cats, like the one shown above, are always femaleWhat scientific phenomenon explains the color pattern of
8_murik_8 [283]

Tortoise shell cats can be explained as the offspring from a incomplete dominance cross. Incomplete dominance gives rise to an intermediate phenotype.

The scientific phenomenon that explains the color pattern is X-linked incomplete dominance.

  • As stated earlier, the tortoise shell colour is as a result of incomplete dominance but as it exists only in females, the inheritance is X linked.
  • This means the tortoise shell colour is inherited in the heterozygous condition as females have two X (XX) and males (XY) can only be either of the parent's true breeding genotype.

Learn more about X- linked traits: brainly.com/question/14548821

4 0
2 years ago
All healthy, highly productive ecosystems provide which of these essential ecosystem services that involve gases in the atmosphe
Crazy boy [7]

Answer: B. Removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms.

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3 0
3 years ago
One reason male peacocks spread their tail feathers is to
Nookie1986 [14]

Answer:

the appearance of the peacock shows he is healthy, and if the peahen mates with him, it is likely that their offspring will also be born healthy. you would want to reproduce with the fittest individuals of your species and guarantee your species will continue to thrive.

Explanation:

7 0
3 years ago
Read 2 more answers
What is the name of the structure that connects the two chromatids?
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The structure is named as Centromere to which the Two chromatids of the mitochondria are connected.
7 0
4 years ago
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