Question 10 of 15
A multicellular organism develops from a zygote that undergoes both cell
di...
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 04:30
Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat
Answers: 2
Chemistry, 22.06.2019 14:50
Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.
Answers: 2
Chemistry, 23.06.2019 07:30
To separate a mixture of hard candies nd marbles the most efficient method would be
Answers: 3
Chemistry, 23.06.2019 16:20
Select the correct answer. what is the wavelength of radio waves? a. between 1 x 10-3 and 1 x 10-1 meters b. less than 1 x 10-11 meters c. more than 1 x 10-1 meters d. between 1 x 10-8 - 4 x 10-7 meters e. between 4 x 10-7 - 7 x 10-7 meters
Answers: 3
Computers and Technology, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
Mathematics, 24.05.2021 19:00
History, 24.05.2021 19:00