Question 10 of 15
A multicellular organism develops from a zygote that undergoes both cell
division and differentiation as it grows into an adult. What explains the fact
that cells are able to differentiate into adult cells with different structures and
functions even though they all have the same DNA?
A. The cell nucleus controls the expression of genes based on a pre-
determined sequence.
B. Cells randomly express different genes during development.
C. Chromosomes are keyed to be expressed only in some cells but
not in others.
D. External and internal cues trigger different genes to turn on and off
in different cells.
I think it’s D but I’m not sure
Answers: 1
Chemistry, 22.06.2019 14:00
What mass of natural gas (ch4) must you burn to emit 276 kj of heat?
Answers: 2
Chemistry, 22.06.2019 21:20
If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied
Answers: 1
Chemistry, 23.06.2019 00:00
The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?
Answers: 1
Chemistry, 23.06.2019 02:50
What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.
Answers: 3
Question 10 of 15
A multicellular organism develops from a zygote that undergoes both cell
di...
di...
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