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sergeinik [125]
3 years ago
11

9. Which of the following determines the color of a person's eyes?

Biology
1 answer:
aalyn [17]3 years ago
6 0

Answer:

the answer is A

Explanation:

When cells are coding for dna the variants of the proteins are what determines the outcome.

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3. Which part of the hair contains DNA?<br> a. Cuticle<br> b. Cortex<br> C. Medulla<br> d. Follicle
madam [21]

Answer:

follice

contains the DNA of the hair

5 0
2 years ago
The antibiotic rifampicin blocks transcription in many bacteria. In the presence of the antibiotic, adding sigma factor has no s
mariarad [96]

Answer:

transcription initiation

Explanation:

Transcription is a process by which genetic information from DNA is used to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently utilized to synthesize a protein by a process called translation. Transcription in prokaryotes has three steps:

1-Initiation: the RNA polymerase is a multisubunit enzyme (holoenzyme) composed of two α, one β, one β’ and one ω and σ subunits (α2ββ’ωσ). This holoenzyme binds to the promoter region of the template DNA strand.

2-Elongation. The sigma σ factor of the holoenzyme is released and the complex and the core enzyme (α2 ββω) moves along the template strand, thereby producing an mRNA sequence

3-Termination. This step can be Rho-dependent, where a protein named "Rho" recognizes the termination site and stop transcription, and Rho-independent (transcription continues until the termination sequence is reached).

In consequence, Rifamycin is likely to block the initiation of transcription because the core RNA enzyme needs to bind the sigma factor (σ) for initiation of transcription in bacteria.

8 0
3 years ago
Explain How rock composition affects the rate of weathering
Anarel [89]

One of the factors that affects the rate of weathering is exposure to the atmosphere. ... Another factor that affects the rate of weathering is the composition of rock. Rocks are composed of minerals, which are solid substances found within rocks that have their own distinct chemical composition.


3 0
3 years ago
'the fern are more terrestrially adapted 'explain this statement​
Llana [10]

Answer:

The reason for this is that both moss and fern species are relatively primitive plants that are only Imperfectly adapted to a terrestrial environment. ferns have both roots and vascular tissue and therefore, can grow larger than moss species, but like the mosses, ferns require water for reproduction.

4 0
2 years ago
The presidency was created by article ________ of the us constitution.
iren [92.7K]

Answer:

article 2

Explanation:

Article Two of the United States Constitution establishes the executive branch of the federal government, which carries out and enforces federal laws.

6 0
3 years ago
Read 2 more answers
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