Answer:
B. The smaller DNA pieces travel farthest towards the positive end of the box
Explanation:
Gel-electrophoresis technique is a technique which is used to separate the fragments of DNA based on their size. The technique is employed in the DNA fingerprint analysis.
The DNA samples are loaded on one side of the gel and when an electric current is applied, the DNA moves from the wells towards the electrodes.
The DNA is a negatively charged molecule which travels through pores in the gel and reaches towards the electrode with positive charge.
The smaller the size of the DNA fragment, the faster it moves.
Thus, Option-B is correct.
Answer:
Master genes tend to be conserved.
Explanation:
Master genes, which are the genes in the DNA that control major development processes such as the development of the skeleton, the organs etc and the production of the necessary proteins.
Since they take on such an important role, they don't really change much. Master genes that affect development tend to be highly conserved so embryonic development can show similar patterns.
I hope this answer helps.
A, because a study showing that people tend to perceive GMO labeled foods as bad reinforces the reason given that labels reinforce stigmas about said products.
Answer:
c
Explanation:
An experiment in which an observer tests a hypothesis by looking for changes brought on by alterations to a variable. In a controlled experiment, an independent variable is the only factor that is allowed to be adjusted, with the dependent variable as the factor that the independent variable will affect.
in Basic terms The control group provides a baseline that lets us see if the treatment has an effect.
How to Read a Climograph
Every place on Earth has weather. However, different places on Earth have different types of "typical" weather. Some places are dry, some are wet, some are hot, some are cold, and some are a little of everything!
You can find out what the weather is like where you live by looking out the window or by stepping outside. Weather refers to temperature, precipitation (rain and snow), and the wind's direction and speed. Scientists who study the weather collect information from different places on Earth and come up with averages, or typical types of weather, for a particular place. This average, or typical type of weather that occurs during a year, is called the "climate."
A quick way to get an idea of the climate of a particular place is to look at a "climate-graph," or "climograph." A climograph is what scientists create to show a particular location's average temperature and precipitation during the year.
Below is a climograph for Moose Factory, Canada. To help you learn to read a climograph, the different parts of the climograph have been identified by number. A description of each of the numbered parts is given below.
Image of a climograph for Moose Factory, Canada. Please have someone assist you with this.1. The type of biome associated with the place.
2. The place where the temperature and precipitation were measured.
3. A scale used to indicate inches of precipitation.
4. The months of the year. The letters J, F, M, etc., stand for January, February, March, etc.
5. The temperature scale in degrees Fahrenheit.
6. A bar graph showing the average precipitation for each month. In this example, the average total precipitation is about 1 inch in January and nearly 4 inches in August. (Note: Values for this graph are found on the left-hand scale.)
7. A line graph showing monthly temperature during the year. In this example, the lowest temperature is about -5°F in January and the highest is about 45°F in July. (Note: Values for this graph are found on the right-hand scale.)
