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sladkih [1.3K]
3 years ago
8

Hypothesize whether prokaryotic cells might have been symbiotic before the evolution of eukaryotic

Biology
1 answer:
lorasvet [3.4K]3 years ago
4 0
Some scientists hypothesize that the eukaryotic cells are really the result of symbiotic processes!

Specifically, the internal organs of the cells could be a remnant of a symbiotic relationship in which one cell lived inside of another cell. These two cells then both split upon reproduction and eventually the cell inside was reduced to an organelle.

But according to this theory, it is very likely that the prokaryotic cells engaged in a number of symbiotic relationship, and that this actually lead to the emergence of eukaryotic cells!
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Answer:

The correct answer is option d) an interaction between nature and nurture.

Explanation:

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A researcher had 15 purebred wikl mice which were brown and all females, they were all mated with a male called Bob, All offspri
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Complete question:

A researcher had 15 pure-bred wild mice which were brown and all were females. They were all  mated with a male called Bob. All the offspring were brown. These were then crossed among  themselves with the following results: 293 brown and 115 white.

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(ii). Determine which color is dominant.

(iii). Work out the ratio of brown to white in the ‘grandchildren.’

(iv). If the researcher crosses two of the white 'grandchildren', determine the color of their  offspring.

Use the Punnett square to work out your answers

Answer:

(i). Determine the color of Bob. BOB IS WHITE

(ii). Determine which color is dominant. BROWN IS DOMINANT

(iii). Work out the ratio of brown to white in the ‘grandchildren.’      

     PHENOTYPIC RATIO BROWN TO WHITE 3:1

(iv). If the researcher crosses two of the white 'grandchildren', determine the color of their  offspring. THE WHOLE PROGENY WILL BE WHITE

Explanation:

Due to technical problems, you will find the complete question, answer, and explanation in the attached files.

Download pdf
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