<span>The answer is c. peach or nectarine
A peach</span> has only one seed. Its seeds have grooves around it.
Banana has many seeds although very small to notice. A cherry has one or two seeds but it does not have grooves on it. An orange seed has grooves on it but there are a lot of them in one fruit.
So option B (hybrids have lower fitness than either parent population) is the correct answer.
What is Reinforcement?
Reinforcement is a consequence used in behavioral psychology to strengthen an organism's future behavior when that activity is preceded by a specific antecedent stimulus. This strengthening impact can be quantified as a higher frequency of behavior, a longer duration of behavior, a greater volume of behavior, or a shorter latency.
To learn more about Reinforcement
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The answer is pronuclei. A pronuclei is the state of the
nucleus of either the sperm or the ovum after the sperm has entered the ovum
but the two nuclei have not yet fused. When the sperm enters the ovum, the membrane
of the sperm pronuclei dissolves hence leaving no barrier for the two genetic
materials to combine.
The cell membrane allows this to be true
Simple squamous epithelium