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ANEK [815]
2 years ago
14

Poinsettias flower in December and January.

Biology
1 answer:
Alona [7]2 years ago
6 0
It should be a short-day plant because it grows in the winter.
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A scientist asks you for help studying fruit fly genetics. She asks you to determine the possible phenotypic ratio for two trait
Bumek [7]
When you combine the genotypes in the Punnet square you get :
1. EeRR
2.Eerr
3.EeRr
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The ratio would be typical for a dihybrid cross: 9 of the individuals with both dominant traits, 3 of the individuals dominant for one trait, 3 dominant for the other trait and only one recessive for both traits.
There will be 9/16 of ebony flyes with red eyes
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X and why realationship is the Distance between two given points

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List two sources within a medical record where the information about present or recent illnesses is most likely to be found.
densk [106]
The two sources within a medical record where the information about present or recent illnesses is most likely to be found are the lab reports and the physician's order. The medical history and physical examination sections of the medical record should contain information about present illnesses. Other possible sources of information are patient referral letters, the discharge summary, and the operative report. 
8 0
3 years ago
The lac operon can be regulated by two distinct methods. Which of the following statements are correct?The lac operon can be act
Ad libitum [116K]

Answer:

  • The lac operon can be activated by the binding of allolactose to the repressor protein, releasing it from DNA and thereby allowing for transcription to occur.
  • In response to low glucose levels, cAMP is upregulated; the binding of cAMP to the cAMP receptor protein triggers the activation of the operon.

Explanation:

Lactose operon or lac operon  (includes lacZ, lacY and lacA genes) is found in some bacteria and the products of its genes are involved in lactose metabolism. So, this operon is active (genes are transcribed) when lactose is present and glucose is absent (or at low level). The operon is regulated by the lac repressor which acts as a lactose sensor and catabolite activator protein (CAP) which acts as a glucose sensor.

When there is lactose (in the form of allolactose) lac repressor detects it and stops being repressor. This enables transcription.

CAP detects glucose (via cAMP) and activates transcription when glucose levels are low.

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3 years ago
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