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Wittaler [7]
2 years ago
14

Local farmers think that a commonly used pesticide is responsible for the increase in appearance of frogs with an additional app

endage. To test this hypothesis, frogs are injected with a small amount of pesticide mixed in ethanol. The frogs are allowed to produce offspring to test the effect of the pesticide. Which of the following would be the best controlled experiment? A. One group is injected with ethanol, and one group is injected with pesticide. B. One group is injected with pesticide. C. One group is injected with pesticide, and one group is not injected with anything. D. One group is injected with ethanol, one group is injected with pesticide, and one group is not injected with anything.
Biology
1 answer:
stira [4]2 years ago
4 0

Answer:

D.-

Explanation:

A control group is needed to carry out the experiment, that control group is the one that is not injected with anything.  Ethanol and pesticide need to be injected into separated groups to document whether it is one or the other that is harmful

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I believe it's 6kg. let me know if i'm right
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Mendel performs a cross using a true-breeding pea plant with round, yellow seeds and a true-breeding pea plant with green, wrink
timama [110]

Answer:

F1 Generation -

Genotype - GgRr

Phenotype - Green and round

F2 generation -

Genotype Ratio –  

GGRR: GGRr: GgRR: GgRr: GGrr: Ggrr: ggRR: ggRr: ggrr

1:2:2:4:1:2:1:2:1

Phenotypic ration  

Green & round: Green & wrinkled: yellow & round:yellow : wrinkled

9: 3:3:1

Explanation:

G represents Green seed color

g represents yellow seed color

R represents round seed

r represents wrinkled seed

Here G is dominant over g and R is dominant over r

F1 generation -

Genotype of true breeding parents will be

GGRR and ggrr

The offspring produced will be -

GgRr

Genotype - GgRr

Phenotype - Green and round

F2 Generation -

Genotype Ratio –  

GGRR: GGRr: GgRR: GgRr: GGrr: Ggrr: ggRR: ggRr: ggrr

1:2:2:4:1:2:1:2:1

Phenotypic ration  

Green & round: Green & wrinkled: yellow & round:yellow : wrinkled

9: 3:3:1

8 0
2 years ago
Australopithecus is an ape that lived in trees, but could walk on two feet. How might fossils from Australopithecus provide evid
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The fossils from Australopithecus provide evidence for evolution because some parts of the bone that contains the DNA of it can be identified as this type of animal. They can be detected through the use of carbon dating devices.

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The CPT codes are:

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90386 for intravenous use.


The icd-10-cm code is Z29.13.

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Answer:

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hope this helps and is right :)

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