Answer:
The correct answer is E. All of the above
Explanation:
Variation in offspring can be contributed by many different events that change the DNA sequence in gametic cells. These events are crossing over, mutation, independent assortment, and random fertilization.
During the gamete formation, the different genes are assorted independently from the other gametes which results in forming various possible combinations of genes in a gamete increasing the genetic variation.
Crossing over occurs during meiosis between the homologous chromosome that results in exchange of genetic material that brings genetic variation in gametes. During random fertilization, the two gametes fuse and genetic material of two different individual comes to make an offspring which forms a genetical different offspring.
Mutation in the gametic cell is transferred to the offspring during fertilization. Therefore all contributes to variation in offspring produced by sexual reproduction.
<h2>The answer is:</h2>
Expansion and cracking
<h2>Explanation:</h2>
Whenever water freezes, it is expanded about 9 percent. Since the water in moist concrete freezes it producing pressure in the pores of the concrete. The collective effect of freeze-thaw cycles and disruption of aggregate can eventually cause expansion and cracking, scaling, and crumbling of the concrete that is formed from moist.
What is transported is the water in the currents. Like the water in the currents is moving in a direction, another thing that is transported is trash and other such stuff that gets caught in the current.
It starts as potential and becomes kinetic when released so (3)
