? Question
Next, you'll build a simulation based on what you think will happen because of natural selection.
Here are two considerations:
• Some individuals with harmful characteristics can still successfully reproduce, but they have an overall lower chance
of doing so compared to organisms with neutral or beneficial traits.
• Natural selection may affect distribution of traits. It's possible that harmful traits could eventually disappear from the
gene pool.
Don't worry about precise population numbers. Based on your understanding of natural selection, you'll be modeling
only one scientifically plausible trend that can occur. There are several correct variations of this diagram. You'll explain
the justification for your choices in part E.
Assume that these plants have a life expectancy of about one year, but the rate of reproduction keeps their population
consistently around 2,500 organisms. Using the same elements you used in part C, draw simulations for year 5 and year
10. Clearly label each simulation.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.

other quantities, called derived quantities, are defined in terms of the seven base quantities via a system of quantity equations. the si derived unitsfor these derived quantities are obtained from these equations and the seven si base units.