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When a few individuals are isolated from the rest of the population and can have very different gene frequencies, it is called the Founder Effect. The founder effect is a type of genetic drift in which a small population is isolated. Due to this isolation, the population may have different gene frequencies than the rest of the larger population.
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Asexual Reproduction only requires one parent and is carried out through budding, regeneration, or fission. It limits the use of harmful characteristics because the offspring is only inheriting genes from that one parent who is already adapted to that one environment. <span />
Answer:
Eating healthier foods
Explanation:
There are many things, such as social, behavioral, and biological factors, that can affect the way we feel about life. In the given scenario, we have Harriet, who has made some changes in her life that make her feel better. She made new friends and found guidance from community leaders, which can be defined as a social influence - an influence originating from interaction with other people. She also introduced a new behavior to her routine - writing about her daily achievements. This is healthy behavior, as she is reminding herself about the good things she has done and additionally motivating herself. The only change that can be described as a biological influence is the change in her diet - she started eating healthier foods. This directly affects her body and makes her feel generally better. It's true that there's a healthy mind in a healthy body.
Answer:
Option c (No, T cells left from the previous infection can kill any virus.
)
Explanation:
When ever viral infection occur, body's immune system start to fight against it by activating B-cells and T-cells.
B-cells produce antibodies that bind with virus and act as label. This label indicate virus as foreign substance. Hence T-cells recognize it and kill it. Furthermore, B-cells form memory cell that keep the viral memory. if this viral infection occur again in future, T-cell recognize it and eliminate the virus.This mechanism is called immunity.
North america is the place in which the goldenrod originates from.
