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kotykmax [81]
3 years ago
10

An experimenter wanted to test the effects of cigarette smoking on rats. She infused the cages of 50 rats with cigarette smoke a

nd the cages of another 50 rats with pure, clean air. The rats that received the clean air were the ____.​
Biology
1 answer:
Feliz [49]3 years ago
4 0

Answer:

Control group

Explanation:

A control group is<em> a group of individuals in an experiment where the independent variable being tested (the exposition to cigarette smoke in this case) can't influence the results.</em> This control group will be then compared to the experimental group (exposed to the smoke) to see the effect of the variable evaluated.

I hope you find this information usefula nd interesting! Good luck!

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Which guinea pig parent(s) in Punnett Square B is homozygous? Which is heterozygous? Explain how you know.
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You did not provide an image for me, but I can explain.

Homozygous, with the root homo, means same. Therefore, a guinea pig parent with homozygous traits would have the traits being the same - either both recessive or both dominant, ie TT, tt.

Heterozygous on the other hand means different, therefore the traits would be one dominant and one recessive - for example, Tt.

If for the punnet square it has different traits (Combo RB for red and black or combo RW red white for like fur color) than heterozygous would be any that isn’t like TT or tt or any other letters used.

Hope this helps!
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