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Brut [27]
3 years ago
7

The diagram shows the embryo development of four vertebrates and suggests all of the following EXCEPT

Biology
1 answer:
olganol [36]3 years ago
5 0

Answer:

The correct answer would be B) there are no similarities in the embryos of all four groups.

There are similarities in various stages of the embryonic development of different species. They look very similar in the early stages of development. The ancestors of the different animals are same and this implies that they are related.  

For example, the embryo of both human and fish has gill slit but in the later stages, the gill slit of human embryo disappears. The difference in later stages shows the evolution of different traits but the beginning of creatures are same.

It is why comparative embryology is also used to provide evidence of evolution.

Thus, the development of four vertebrates and suggests all of the following EXCEPT there are no similarities in the embryos of all four groups.  

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Suppose that the "fabulous" phenotype is controlled by two genes, A and B, as shown in the diagram below. Allele A produces enou
vitfil [10]

Answer:

The expected ratio of the F_2 generation from F_1 generation will be

<u>9 "fabulous": 3 "smashing": 4 "plain" </u>

Explanation:

The expression of the phenotype will follow Mendel's Dihybrid cross.

plain→smashing

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smashing→fabulous

(only when allele B is present, which produces Enzyme 2)

Keeping the above statements in mind, in F_2 generation, only the genotypes having both A and B alleles will express phenotype "fabulous",as both Enzyme 1 and Enzyme 2 are required for that. The genotype having at-least one A allele and no B allele will produce the phenotype "smashing", as Enzyme 1,produced by allele A, will convert "plain" into "smashing". Hence, the dihybrid cross will as in the attachment.

4 0
3 years ago
Africa and South America are 4,000 km apart. If the plates move away from each other at a rate of 30 km per 1 million years, how
yulyashka [42]

Answer:

The majority of the research shows that the plates move at the average rate of between approximately 0.60 cm/yr to 10 cm/yr. Some sources state that in the North Atlantic, the rate of movement is only about 1 cm (about 0.4 in) per year, while in the Pacific it amounts to more than 4 cm (almost 2 in) annually, while others say that plates, in general, travel from 5 to 10 cm/yr.



The Eurasian Plate is moving away from the North American Plate at a rate the is about 3cm per year. That is about the same rate at which your fingernails will grow.



The distance from New York to London is in 3459 miles (5567 km). What will the distance be in 5 million years?.





The distance from New York to London in 5 million years will be 3552 miles (5717 km). So if today it takes us 7 hours and 30 minutes to fly to London at a speed of 460 miles per hour, in 5 million years at the same rate of speed will take us close to 8 hours.

7 0
3 years ago
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in order for a hypothesis to be testable, scientists need to be able to carry out investigations that will either support or dis
IRISSAK [1]

True

Explanation - A hypothesis is given once the question is identified and background research has been done. A hypothesis is validated by performing experiments.

Prior to the experiments being performed, proper planning is done. After the experiment is carried out, the data is noted. Once the data is noted, results are inferred.

If the evidence agrees with the prediction then the hypothesis is being supported and validated. If the result fails to validate the hypothesis then the hypothesis need to be abandoned or modified.

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3 years ago
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What is the function of a nucleus in a plant cell and a endoplasmic reticulum
qwelly [4]
It stores the cell's hereditary material, or DNA, and it coordinates the cell's activities, which include intermediary metabolism, growth, protein synthesis, and reproduction (cell division). The diverse functions of the ER are performed by distinct domains; consisting of tubules, sheets and the nuclear envelope.
5 0
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What do you think caused people to accept the heliocentric model of the solar system?
Vlad1618 [11]

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Explanation:

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