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Marizza181 [45]
3 years ago
12

In the 1990s, many scientists agreed that the five-kingdom classification scheme should be expanded to six kingdoms. Which disco

very
supported this decision?
A
Fungi differed significantly from both plants and animals
B. Two groups of monerans-Eubacteria and Archaebacteria--differed significantly from one another
C
Protists are not a true kingdom, and should be classified in at least two different kingdoms
D. Fungi are not a true kingdom, and should be classified in at least two different kingdoms
Biology
1 answer:
chubhunter [2.5K]3 years ago
5 0

Answer:

B. Two groups of monerans-Eubacteria and Archaebacteria--differed significantly from one another

Explanation:

It was Carl Woese who divided the prokaryotes into 2 kingdoms, Eubacteria and Archaebacteria based on RNA studies. So. this led to additional 6th classification added to Whittaker's classification of 5 kingdoms.

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Answer:

Explanation:

Mendel's law of independent assortment state that two different genes assort independently in gamete formation.

To reach this conclusion, one has to do a dihybrid cross. This means that two genes responsible for different traits need to be analyzed at the same time.

1) Starting with a <u>parental generation of a cross between two pure lines</u> (homozygous for both genes) <u>with different traits</u>, a plant with yellow and round seeds (YYRR) and another with green and wrinkled seeds (yyrr). <u>The F1 will be phenotypically homogeneous (</u>yellow and round)<u>, and genotypically heterozygous (</u><u>YyRr</u><u>)</u>.

2) If the individuals from the F1 are crossed with one another,  we have to do a Punnett Square to determine the phenotypic ratio of the F2.

  • If the genes assort independently, the F1 individuals will produce their different gametes with the same probability. Each possible gamete will appear in a 1/4 proportion: YR, Yr, yR, yr.
  • The 9:3:3:1 ratio is a result of analyzing the possible phenotypes that result from the dihybrid cross.

See the attached image for an illustration of the crosses in each generation and the Punnett Square.

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3 years ago
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Which of the following is the path an oxygen molecule takes to get from the abiotic environment into a cell?
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The oxygen is inhaled to the blood vessel which brings the oxygen to a cell.
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What does learn by trial and error mean? (
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Aloe vera plants do not contain compounds that may have health benefits.<br> True<br> False
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