Answer:
in the wall of the right atrium of the heart.
Explanation:
The sinoatrial node (SA), consisting of spindle-shaped cells, initiates the electrical activity of the heart. From its location in the right atrium in proximity to the superior vena cava, the electrical activity spreads to the atria, whose cells are larger than those of the SA.
Answer:
<em>B. Methyl yellow, which changes from yellow to red around a pH of
</em>
<em>4.0</em>
Explanation:
A pH indicator is a technique by which the pH of a solution can be known. The scenario in the question describes that the scientist wants to determine a pH after it gets converted from 6 to below 4. For this recognition, the scientist should use a methyl yellow indicator which will change from yellow to red once a pH around 4 is achieved.
Answer:
Parent´s chances:
- Mom´s chances of giving their children the big feet allele are 2 out of 2, or 100%
- Mom´s chances of giving their children the small feet allele are 0 out of 2, or 0%
- Dad´s chances of giving their children the big feet allele are 1 out of 2, or 50%.
- Dad´s chances of giving their children the small feet allele are 1 out of 2, or 50%
Offspring chances:
- The offspring have 4 out of 4 or 100% of probability of having big feet. And 0 over 4 or 0% of probabilities of having short feet.
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached file
Answer:
Please provide the question you want help with
I think the correct answer from the choices listed above is option A. Directional selection can be distinguished from disruptive selection by the elimination of extreme variations of traits. Directional selection is a natural selection where an extreme phenotype is favored than others.
