In case of the genes that assort independently in a test cross, the phenotypic ratio is 1: 1: 1: 1. In the given case, the total number of phenotypes is 400, thus, every phenotype should be 100 each. Since that is not the case, it may be concluded that the genes are not assorting independently.
Thus, to determine the chi-square = (observed-expected)^2 / expected.
By putting the values, we get the values of chi-square as
AB = 4.84
Ab = 3.24
aB = 3.61
ab = 4.41
Thus, the chi-square value will be the addition of the individual values that comes out to be 16.1. Here there are three degrees of freedom (Number of classes-1). Observing at the P table, this puts the value of P < 0.005.
A large chi-square value suggests that independent assortment actually did not occur as the expected and the observed values were very distinct.
Adenine and thymine are complementary to one another as are guanine and cytosine. There are two important<span> reasons why </span>DNA<span> is composed of complementary</span>bases<span>. ... The second reason is that the </span>pairs<span> of </span>bases<span> are complementary because their chemical structure allows for strong hydrogen bonding and they fit together well.</span>
The flattening of our solar system likely helped changed random motions into more orderly ones
The correct answer is option D, that is, whole blood with an anticoagulant added.
The PCV or the packed cell volume determines the proportion of red blood cells present in the whole blood. It is one of the various tests, which may be used to diagnose or monitor a condition known as anemia. The test may also be used to diagnose or monitor a rare kind of blood cancer called polycythemia.
The PCV can be determined by centrifuging heparinized blood in a capillary tube at 10000 RPM for 5 minutes. This distinguishes the blood into layers. The volume of the packed RBCs divided by the total volume of the blood sample provides the PCV.
Answer:
Humans take natural resources for things such as manufacturing oil, building, making plastics, etc. For example, harvesting trees to cut and make planks of depletes the Earth of a necessary resource for filtering oxygen.