the study of living organisms divided into many specialized fields that cover their morphology , physiology , anatomy , behaviour , origin and distribution.
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Mrk me brainilist
I would say A just because if your dad has a genetic disease and you mom does not have it you have about a 50 50 chance of having that disease in a perfect control that's assuming that its recessive and that your moms side does not present this disease
that's how its always been taught to me
When two atoms<span> each need additional </span>electrons<span> to fill their valence shells, but neither is electro-negative enough to </span>steal electrons<span> from the other, they can form </span>another kind<span> of chemical </span>bond<span> called covalent </span>bonds<span>. In a covalent </span>bond<span>, two </span>atoms<span> move closer to share the </span>electrons<span>.</span>
Neurons, act as the communicators of the nervous system. Neurons receive information, integrate it, and pass it along. They communicate with one another, with cells in the sensory organs, and with muscles and glands.
Information was taken from: http://www.sparknotes.com/psychology/psych101/thebrain/section2/
In case you would like to do further reading.
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.