As with all multicellular organisms, homeotic genes in plants control morphogenesis (how the tissues and organs of the plant are arranged). In maize plants, the homeotic gene KNOTTED1 (abbreviated KN1) helps maintain the indeterminate state of shoot apical meristems. In wild-type maize plants, KN1 is expressed at high levels in the shoot apical meristem, but is expressed at low levels in leaves. In some mutant maize plants, KN1 is expressed at high levels in leaves. In those plants, outgrowths or knots of adventitious shoot meristems (shoot meristems that appear in abnormal locations on the leaves) form. Use this information to determine which of the following statements are true. Select the four statements that are true. Expression of the KN1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.

In wild-type maize plants, the KN1 gene is mostly expressed in shoot apical meristem cells.

In wild-type maize plants, the KN1 gene is expressed differentially in shoot apical meristem cells and leaf cells.

Leaves of the mutant maize plants produce more KN1 protein than leaves of wild-type maize plants.

c. would be the answer : )

explanation:

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

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.