Answer:
(i) An allele is a variant of a gene, can either be short or tall.
Dominant = the tall allele that "trumps" the short allele. if a dominant and recessive allele is present (heterozygous) then the dominant phenotype will be shown.
(ii) David's eyes are Brown
(iii) Sarah's eyes are blue
(iv) David - B, b
Sarah - b, b
(v) Possible genotypes include Bb and bb. These give the phenotypes of brown eyes or blue eyes.
(vi) The chance for blue eyes is 50% (or 1:1 ratio)
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
The mass of vascularized connective tissue that temporarily forms during wound healing is called the granulation tissue.
Granulation tissue refers to the reddish connective tissue that forms around the surface of the wound during wound healing. It is associated with the formation of the new blood vessels renedering it a red color and delivers the nutrients to the tissue. It is primarily composed of a tissue matrix consisting of different types of cells which are associated with various functions like the formation of the matrix, protect against infection and the formation of the blood vessels which is called the vascularization. Fibroblasts are present in the extracellular matrix of the granulation tissue.
Meiosis produces 4 haploid cells. In meiosis you start with a diploid cell that divides twice to produce four haploid cells.
Hope this helps! =^-^=
