The genotype of heterozygous would be PpLl.
Formed gametes are PP Pl pL pl
Parents: PpLl x PpLl
<span>The correct answer is
B. 9:3:3:1 ratio (9 polka-dot tails and long eyelashes, 3 polka-dot tails and short eyelashes, 3 solid tails and long eyelashes, 1 solid tail and short eyelash)</span>
Polka-dot tails and long eyelashes: PPLL PPLl PpLL PpLl PPLl PpLl PpLL PpLl PpLl
<span>Polka-dot tails and short eyelashes: PPll Ppll Ppll</span>
<span>Solid tails and long eyelashes: ppLL ppLl pp Ll</span>
<span>Solid tail and short eyelash: ppll</span>
Thank you for posting your biology question here at brainly. The statement best describes the work of these researchers is "The researchers applied creativity to solve a problem in running an experiment.", its the third one. I hope my answer helps.
Answer:
because of factories and cars and smoking
Explanation:
The trp operon is a group of genes that code for enzymes involved in the synthesis of tryptophan, an amino acid.
The regulation of these genes is done by two regulatory processes:
- Transcriptional attenuation
- Post-transcriptional attenuation.
Transcriptional attenuation is the process by which transcription of a gene is reduced by the binding of regulatory proteins to the DNA at or near the promoter region. Post-transcriptional attenuation is a process where degradation of RNA molecules occurs after they are transcribed from DNA, but before they are translated into protein.
<h3 /><h3>How do they modulate trp operon transcript levels?</h3>
- The trp operon is a system of genes that encode the enzymes needed to synthesize tryptophan from indole-3-glycerol phosphate.
- The transcription of these genes is controlled by a repressor protein. When tryptophan levels are high, the repressor binds to the operator and prevents transcription. When tryptophan levels are low, the repressor is not bound to the operator and transcription can proceed.
To learn more about the regulation of trp operon, visit:
brainly.com/question/13897742
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The correct answer is "Two identical DNA molecules are made that contain one original strand and one paired strand."
Explanation:
The word "conserve" refers to the action of preserving an element. Moreover, the prefix "semi" refers to partial. In this context, DNA replication can be considered as a semi conservative process because the original DNA is partially preserved. This is explained in "Each of the two daughter molecules made during replication contain one strand from the parent molecule and one new strand" because this excerpt shows how in the process each of the cells resulting has at least 50% of the DNA of the original cell. This implies replication does not lead to a completely new cell as part of the genetic material is kept. According to this, this process can be considered as semiconservative because "Two identical DNA molecules are made that contain one original strand and one paired strand."