Answer:
cardiovascular and respiratory systems
Explanation:
the cardiovascular system includes your heart and blood vessels, which function to remove deoxygenated blood from and return oxygenated blood throughout your body
Your teeth
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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
<h2><u>Answer</u> :</h2>
The correct option is A. If a dominant allele is present, the recessive allele won’t be seen.
The dominant allele is the one which appear, and the recessive one isn't shown.
For example - If a person has 2 alleles of eye colour as B ( black ) and b ( brown ), in which black is dominant and the brown one is recessive, then the person will have black eye colour because only dominant allele shows its characteristics.
_____________________________

Let,
Dominant trait, red color be designated as C'C'
Recessive trait, white color be represented as C"C"
The F₁ generation of the cross :
C'C' X C"C" = C'C"
F₂ generation cross is shown in the image attached.
According to the cross, the probability of pink flower being produces 1s 50%