Biology, 17.12.2020 01:30 jaffeisabel
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. External and internal cues trigger different genes to turn on and off in different cells
B. The cell nucleus controls the expression of genes based on a pre-determined sequence
C. Chromosomes are keyed to be expressed only in some cells but not in others
D. Cells randomly express different genes during development
Answers: 1
Biology, 21.06.2019 19:50, Kinglilray998
Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?
Answers: 3
Biology, 22.06.2019 15:10, sydneip2394
Asap many people try to eliminate fat from their diets which is one reason it is necessary for humans to eat fat a) fat is the only way to get energy b) every cell in the body must contain fat c)fat stores less energy than polysaccharides d) saturated fats make blood vessels healthier
Answers: 1
Biology, 23.06.2019 00:30, Korkot7633
Aspecies of butterfly has alleles for wing color that are either blue or orange. when a blue butterfly and an orange butterfly mate, their offspring have wings that are both blue and orange. explain the process through which wing color is expressed.
Answers: 3
A multicellular organism develops from a zygote that undergoes both cell division and differentiatio...
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