The answers is white blood cells. White blood cells are the cells of the immune system, it defends the body against infection and disease. All white blood cells are produced and derived from multipotent cells in the bone marrow called hematopoietic stem cells.
Answer:
the ability to produce clean water is an index of water quality based on six attributes
Answer:
A disadvantage of artificial selection is that it reduces the variation in a certain species.
Answer:.
A test-cross can reveal an unknown genotype. As the plants are heterozygous they sort independently of each other. when they are cross linked dominant genes express themselves in most of the cases whereas the recessive genes also express themselves resulting in the formation of tall and yellow plants and as well as short and green plants.
Explanation:
The impact of a single gene on more than one characteristic is called pleiotropy. Mendel deduced from his results that each individual had two discrete copies of the characteristic that are passed individually to offspring.Mendel called the dominant allele the expressed unit factor; the recessive allele was referred to as the latent unit factor.Mendel’s law of dominance states that in a heterozygote, one trait will conceal the presence of another trait for the same characteristic. The recessive trait will only be expressed by offspring that have two copies of this allele and these offspring will breed true when self-crossed.
Answer: Option B,C, E and F
Explanation:
Action potential describe rise or fall of membrane potential of a particular cell location. This happen when neuron send impulses away from cell body. During action potential, one of the neural membrane opens so as to allow positively charged ions inside the cells and negatively charged ions to move outside the cell.
