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vekshin1
3 years ago
6

All cells have _____.

Biology
1 answer:
Olin [163]3 years ago
5 0
All cells have all these except chloroplast and cell wall
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Which of Thomas hunt morgans hypotheses was valid
Simora [160]
<h3><u>Answer;</u></h3>

white eyes are homozygous recessive

<h3><u>Explanation</u>;</h3>
  • <em><u>Thomas Hunt Morgan work with the fruit fly showed that genes are linked in a series on chromosomes and are responsible for identifiable, hereditary traits. </u></em>He was the first to identify that genes are linked to the same chromosome.
  • <em><u>According to his hypothesis he stated that genes that are linked are arranged linearly on a chromosome, while those genes with low combination frequencies must be closer together and thus difficult to separate</u></em>.
  • When a gene contains two similar alleles that is, either two dominant alleles or two recessive alleles then it is called homozygous dominant and homozygous recessive respectively. White eyes of a fruit fly is an example of homozygous recessive
8 0
3 years ago
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Why was it important for Miller and Urey to sterilized the apparatus to kill any bacteria in it?
valentina_108 [34]

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Having bacteria would produce organic molecules and defeat the whole purpose of the experiment which is to make organic molecules from inorganic molecules. The experiment was supposed to demonstrate the formation of the first organic molecules that initiated life on primordial earth. It is believed that lightning powered the formation of the first simple amino acids, like glycine, from the primordial atmosphere which was mainly composed of carbon dioxide and methane.

3 0
3 years ago
this is science the question is Mixture A has 3 cups of white paint and 9 cups of green paint. Mixture B has 7 cups of white pai
Sloan [31]
They are the same because if u simplify both fractions they are both 1/4
4 0
3 years ago
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Sort the examples into proper mechanisms of reproductive isolation.
vovangra [49]
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So, the first and the third example (the urchins and the grasshoppers) show the prezygotic mechanism, as the two individuals are not able to mate or form a zygote.
The second and the fourth example ( zonkey and the death of a zygote) show the working of the postzygotic mechanisms, as the zygote is formed, but it seems to be inviable, and the zonkeys are sterile, preventing the individual to reproduce.

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Question 1<br> Where does the water cycle begin?
bezimeni [28]

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The ocean.

Explanation:

It starts with the ocean and then there is evaporation condensation and precipitation and then runoff.

3 0
3 years ago
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