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A substance, either an ion or an electrically neutral molecule, formed by the union of simpler substances (as compounds or ions) and are held together by forces that are chemical rather than physical.
Answer is A. A Hox gene
Hox genes are a series of genes that controls the differentiation of cells and tissues in an embryo by turn on and off other genes. If Hox genes express incorrectly, a major changes in the morphology of the individual can be seen.
Let’s understand this with an example: The Ultrabithorax, a Hox gene determines the Third thoracic segment in <em>Drosophila melanogaster</em>. Third thoracic segment displays a pair of legs and a pair of reduced wings used for balancing. In the mutant<em> Drosophila</em> the functional Ultrabithorax protein is absent. Due to this mutation, the third thoracic segment now expresses the same structures found on the second thoracic segment, which contains a pair of legs and a pair of wings which are fully developed .
Answer:A particle has zero velocity initially (i.e., at time
t=0
t=0
) and its acceleration at
t
t
seconds is
a(t)=72t−4
t
3
a(t)=72t−4t3
meters-per-second per second. During the time interval
[5,8]
[5,8]
seconds find the average acceleration and the average speed of the particle. I got the average acceleration by taking the integral and then plugging that into
f(8)−f(5)/8−5
f(8)−f(5)/8−5
but I have tried working through the average speed and I can't find the answer for that one.
Explanation:
during an ice age mostly the earths oceans freeze
