He suggested that the continents<span> plowed across the ocean floors. ... Because </span>Wegener<span> could not identify the cause of </span>continental drift<span>, most geologists </span>rejected <span>his </span><span>idea. that is why</span>
Answer:
The involvement of more than two genes.
Explanation:
The polygenic characteristics have many phenotypes because more than two genes governs the phenotype of individual organism. The single gene contains a pair of alleles that codes for two phenotype and two genes will code for 4 phenotype. Thus, more than two genes for example, three genes will have six phenotypes.
The skin color and height are polygenic characterstics in humans.
A prey is an animal that is being eaten by a predator.
- If prey population decreases in number, the predator population will also decrease because there is not enough food for predators to survive.
- If predator population decreases, the prey population will increase because less prey will be eaten by predators.
- If prey population increases, the predator population could also increase because there will be a lot of food for them.
- If predator population increases, the prey population must decrease because more predators will eat more prey.
<span>race is not a defined term in biology and cannot solely be explained by different groups having different genes</span>
Answer:
The idea of spontaneous generation was disproved by Francesco Redi.
Explanation:
- Spontaneous generation is a theory that states that living organism can generate from an inanimate object.
- In, 1668, Francesco Redi demonstrate an experiment explaining the theory of spontaneous generation by using meat.He noticed that flies laid eggs on meat which was kept open and maggots developed.
- He took three pieces of meat to do the experiment.
- The first piece of meat was kept open and as usual maggot development takes place.
- With the 2nd piece of meat,he covered it with a piece of cheesecloth and noticed that,flies lay eggs on the cheesecloth but when he removed the cloth,maggot did't form.
- Next, he took a piece of paper and cover the meat piece, and he noticed that flies did't lay any eggs and thus no maggots formed.
