The genotype for a specific trait is written with two letters such as BB, Bb, or bb, and a cross for a trait can be written BB x Bb. What do the two letters of the genotype represent? O An organism's outward appearance is its phenotype.
O An organism's genotype is a result of its phenotype.
O Genes for a trait come from either the mother or father but not both parents.
O Traits are passed from both parents to offspring through pairs of genes

telophase and anaphase

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.