Answer:
I think Osteocytes and hematopoietic stem cells
Answer: The complementary sequence will be TTAGCCT
Explanation: According to Watson and Crick base pairing rule, in DNA adenine pairs with thymine while c guanine pairs with cytosine.
DNA is a double-stranded helix in which the two strands are complementary and antiparallel to each other. Being complementary does not mean that the two strands of the DNA are the same in base sequence and composition, rather it means that where adenine is found in one strand of the DNA, thymine occurs in the other strand and wherever guanine occurs in one strand, cytosine is found in the other strand.
<span>Chromosomes can increase genetic diversity by the way they are replicated. Since chromosomes are paired, and sperm and egg cells have only 1 of each pair, few sperm and egg cell wil have identical chromosomes. For humans, with 23 chromosome pairs, the number of possible combination of chromosomes for any child is over 8 million. That means the chance of any 2 siblings (who are not identical twins) having the same chromosomes from both parents is less than 1 in 8 million. Add to that the possibility of chromosomal crossover during the production of sperm or egg cells, and the number of different gene combinations in any child becomes staggering. If a frog, for example, lays a few thousand eggs, chances are that all of them will have different chromosomes within their cells. That may be why natural selection has favored organisms with dozens of pairs of chromosomes. Organisms with lots of chromosomes can maintain a high level of diversity within the population. Since genetically diverse species are more resistant to disease, it is not difficult to understand many different lineages have converged upon the same solution of having dozens of chromosomes.</span>
The answer is : b. Theoretically, noise pollution could be so great that it could kill a person. Noise pollution affect our sense of hearing... leading to hearing loss. It also disturb our sleep which could lead to fatigue. Long-term noise above a certain level can have a harmful influence on our health. Research shows that road traffic and aircraft noise increase the risk of high blood pressure. Noise pollution also affects wildlife, where animals depend wholly on their hearing for hunting.
Controls. The answer is “controls”
