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.
mayflies
frogs
bass
Answer:
frogs
Explanation:
Among the organisms shown in the question above, frogs are the least susceptible to damage caused by acid rain, but that does not mean that frogs do not suffer any damage, quite the contrary. Frogs are amphibians and like all amphibians have very sensitive and highly permeable skin, which makes acid rain very harmful to your body and can cause fatal consequences.
Answer: Mendel studied pea plants because they reproduced manually and had traits that were easily observable.
Explanation: taking the assignment that was the sample
Answer:
Halita is no more valuable than gold.
Explanation:
Halite is a sedimentary rock salt of formula NaCl. In short, halite is a salt and is neither more precious nor more valuable than gold.
As a matter of curiosity, we can say that halite is a slightly rosy white crystal, transparent, glassy, hardness 2, density 2.1 - 2.2. One of its particular properties is its salty taste. The presence of impurities can give it a reddish, brownish or even bluish or greenish tinge in case of radioactivity.
A.
at the top
B.
on the right side
C.
in the bottom left corner
D.
on the left side
B. Many tests must be performed because variables need to be tested one at a time (first test for water effects, then test for light effects, etc.).
C. Some effects take a long time to become noticed, so the experiments often have to take place over long periods of time.
D. All of the above.
Answer:
The correct answer is option D, that is, all of the above.
Explanation:
While performing an experiment to find the effects of the environment on a life form there is a need to consider a lot of factors as many factors in tandem can affect the species in a mentioned scenario. While testing some of the variables would not be seemed obvious at first instance, therefore, in the first look or test, the outcomes are generally inconclusive. At the same time, there is a need for each of the variables to be tested carefully, and also some of the variables may consume more time in order to sound conclusive.