Humans start off as a single fertilized cell. How does that one cell create multiple organs and organ systems to form a single human? Cells are not differentiated and there are not special tissue types. All cells are the same with identical DNA and proteins navigate their way to the appropriate organs.

As cells replicate, the new cells only replicate small sections of DNA that they will need to be specialized as a new emerging tissue.

As cells replicate, new cells appear for specialized tissues

As the organism grows, different genes are turned on or off through cell differentiation

I already tried the second one and it was wrong

As cells replicate, new cells appear for specialized tissues

Explanation:

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

answer; i do believe that the correct answer is; ///mendelian genes are at specific loci on the chromosome and, in turn, segregate during meiosis;