If the cell is prokaryotic, there will be no nucleus present; prokaryotic cells have a cell wall, flagella, and pilus. Eukaryotic cells have a nucleus, no cell wall, and contain more organelles than prokaryotes; they are more complex.
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Using a Punnett Square you can solve this. If two heterozygous individuals with polka-dot tails mate then both their genotype would be Pp. The Punnett square will then look like this:
P p
P PP Pp
p Pp pp
Now if you look at the square, you have the following genotype and phenotype combinations:
PP = 1 out of 4 = 25% : Homozygous polka-dot.
Pp = 2 out of 4 = 50%: Heterozygous polka-dot
pp = 1 out of 4 = 25% Homozygous solid color
With that the answer would then be A. <span>75 percent chance of a polka-dot tail and 25 percent chance of a solid colored tail (25 percent PP; 50 percent Pp; 25 percent pp).</span>
It expanded slowly - False
It gradually warmed - False
Stars and galaxies formed - True
Atoms such as hydrogen and helium formed - True
It was no bigger than the head of a pin before it exploded - True
Answer:
A. All matter in the universe has expanded outward from a single point.
Answer:
Life is a characteristic that distinguishes physical entities that have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased (they have died), or because they never had such functions and are classified as inanimate. Various forms of life exist, such as plants, animals, fungi, protists, archaea, and bacteria. The criteria can at times be ambiguous and may or may not define viruses, viroids, or potential synthetic life as "living". Biology is the science concerned with the study of life.
There is currently no consensus regarding the definition of life. One popular definition is that organisms are open systems that maintain homeostasis, are composed of cells, have a life cycle, undergo metabolism, can grow, adapt to their environment, respond to stimuli, reproduce and evolve. However, several other definitions have been proposed, and there are some borderline cases of life, such as viruses or viroids.
Explanation: