Answer:
A DNA marker
Explanation:
also known as a size standard or a DNA ladder) is loaded into the first well of the gel. The fragments in the marker are of a known length so can be used to help approximate the size of the fragments in the samples.
The texture of a rock is determined by 3 components of the grain: size, shape and pattern.
The rock in your image (although not very clear in your picture) seems to have very large grains as opposed to several coarse grains. Furthermore, the pattern on the rock is uniformly colored and non-banded.
Thus, from what I can discern in the image, the statements that best describe the rock would be:
The grains in this rock are very large and
The rock has a non-banded pattern.
Answer:
Osmoregulation is an example of a negative feedback, homeostatic control system. This system detects changes in the salinity of the water Chinook salmon live in, working to keep the body water concentration constant.
Explanation:
g. dna replicates occurs before when the cell enters the g2 stage.
hope this helps! ❤ from peachimin
