I don't think there would be a lasting effect
The correct answer is this one: "<span>D) These fish could have been produced by introducing the DNA of a coral or jellyfish into an empty fish egg. "</span>
Here are the choices.
<span>A)
These fish have recombinant DNA.
B)
These fish are transgenic animals.
C)
A vector, such as a plasmid or virus, may have been needed to get the foreign genes into fish cells.
D)
These fish could have been produced by introducing the DNA of a coral or jellyfish into an empty fish egg. </span>
Answer:
False
Explanation:
Myocardium's oxygen and nutrients are provided by coronary arteries. Coronary arteries are outside the heart and they wrap the whole heart to provide oxygen and nutrients.
Heart needs the continuous oxygen and nutrient supply for proper functioning like any other tissue of body. Any problem in coronary artery will lead to heart problem such as myocardial infarction.
The blood present inside the heart chambers does not provide any oxygen or nutrients to heart.
Answer:
B
Explanation
A does not make since because a rock cant have evolved from the trilobite. it is not C because they are extinct. and D was confusing but i chose b whitch was correct
Answer: 1.251 billion years
Explanation: The half-life of potassium 40 is 1.251*10^9 years. Since in the igneous rock there is one half of potassium left it means only one half-life has passed.