Answer:
specific DNA elements
Explanation:
Gene regulation is a mechanism that acts to promote or repress the expression of a gene. It controls the rate and manner of gene expression. Gene regulation involves a complex set of interaction between genes, RNA molecules and proteins (transcription factors). A basic tool employed during gene regulation is the binding of proteins called transcription factors to specific DNA.
Transcription factors are proteins that play an important role in regulating the transcription of genes by binding to specific regulatory nucleotide sequences(DNA). Transcription factors (proteins) help turn specific genes on or off by binding to close DNA elements.
Transcription factors operate by either making it easy or hard for RNA polymerase (an enzyme that synthesizes new RNA molecule by attaching itself to DNA) to bind to the promoter of a gene. Transcription factors that boost gene transcription are called ACTIVATORS while those that inhibit gene transcription are called REPRESSORS.
The answer should be B). Helpful traits passed to the next generation through reproduction.
B is correct because in natural selection, if a population cannot adapt over time it will be “naturally selected” and die off, or be near extinction due to non-adaptive ness. Hope this helped!
<span>Cohesion- attraction of molecules of the same substanceCauses water molecules to be drawn together to form a smooth surface (surface tension)adhesion- attraction of molecules to different substances<span>The correct answer is A because the cohesion causes water to form in drops, and adhesion allows it to stick to different substances, such as the pine needles</span></span>
Answer: The genotype is homozygous and white petal color is a recessive trait
Explanation:
The only way for a recessive trait to be present in the phenotype is if the genotype is homozygous homo meaning same ex. pp or PP heterozygous hetero meaning different ex. Pp
Light travels extremely fast through the air, 300,000,000 m/s. Sound travels much slower, 343 m/s through air. Therefore we can see light in an instant, but it takes a while to hear thunder.
Explanation:
When you compare the numbers (speed of light vs speed of sound) you understand that light is 10^6 faster in speed that sound. When lightning occurs at a greater distance from the observer, this difference in speeds in more perceptible because the two different waves would have to travel greater distances to the observer and the relative differences in speed become increased.
Remember however, that sound travels in a medium while light waves do not require a medium because they are electromagnetic waves. In a vacuum, therefore, you would observe the lightning but never the sound.
Learn More:
For more on light and sound waves check out;
brainly.com/question/13402259
brainly.com/question/12779911
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