Answer:
2. increases
Explanation:
Positive feedback is often associated with uncontrolled, runaway processes such as nuclear chain reactions and models of catastrophic climate change. ... If signaling output activity increases, positive feedback will further increase input levels, thereby enhancing the output signal.
The answer is D. Because it takes light 8 mins to reach the Earth from the sun.
The scientific method involves developing a question to answer a hypothesis.
Answer:Changes that affect the structure of chromosomes can cause problems with growth, development, and function of the body's systems. These changes can affect many genes along the chromosome and disrupt the proteins made from those genes.
Structural changes can occur during the formation of egg or sperm cells, in early fetal development, or in any cell after birth. Pieces of DNA can be rearranged within one chromosome or transferred between two or more chromosomes. The effects of structural changes depend on their size and location, whether gene function is interrupted, and whether any genetic material is gained or lost. Some changes cause health problems, while others may have no effect on a person's health.
Explanation: took the test
Single gene traits<span>: controlled by a </span>single gene<span> that has two alleles (ex: widow's peak) – only two phenotypes are possible – widow's peak or no widow's peak.</span>Polygenic traits<span>: controlled by two or more </span>genes. Has 2 or more alleles. One polygenic trait<span> can have many possible genotypes and phenotypes! </span>