She tells them that once cells differentiate, they become different from one another and each one become specialized depending on the type of functions it will perform. Differentiation is the process by which cells's structure change and become modify to carry out certain functions. As cells differentiate they become different from one another and cells which are similar in functions come together to form tissues and organs.
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)
Why are people just giving away the answer?