Transport of materials along a concentration gradient from high to low concentrations is called passive transport
Answer: Expected heterozygous genotype = 2×46 = 92
Explanation:
According to the hypothesis of segregation of paired genes in heterozygous F1 generation crosses produces 1:2:1 genotype ratio. This means that all these three possible genotypes should be produced in the F2 generation meaning that we have 1(Dominant homozygous) :2 (Dominant heterozygous): 1 (Recessive Homozygous).
Phenotypic ratio shared (dominant: recessive) = 154 and 46
If recessive homozygous phenotype = recessive homozygous genotype = 46
The expected dominant heterozygous genotype= 2 × (recessive homozygous genotype)
= 2 × 46 = 92
Upwelling is important to mix the nutrients that are present deep inside the water.Updewelling is a phenomenon in which the deeper water rises and gets mixed to the surface water to promote the growth of phytoplanktons and seaweeds as the water that is present deep inside is rich in nutrients.These phytoplanktons serve as as source of energy for large fishes and other aquatic animals. As these large animals are higher in population and are an important part of food chain and they also provide food to different marine mammals ,sea birds.The deep water infuses with costal water so to serve as a fuel for high productivity of marine ecosystem.
Answer: Fertilization
Explanation: Fertilization occurs when a sperm and an egg combine