Big Idea 3

2)Ethylene: Ethylene is a color and odor free  flammable gas that is the simplest unsaturated hydrocarbon after acetylene.  Ethylene is also a natural gas in plants and sometimes helps to ripen fruit.  Since this apple is a fruit, its plant produced Ethylene as the apple was ripening.

3)Eukaryote: A Eukaryote is an organism  that have membrane bound organelles within the cells and sometimes do not have a cell wall but have a cell membrane.  The Eukaryote also has linear chromosomes.  All animals are Eukaryotes and therefore this Bear is one.

7)Evidence of Different Alleles for the Same Trait: Alleles are alternative forms of a specific gene  are found on a specific point on the chromosomes.  Many different combinations of alleles can yield a specific trait as in the case of the pictures.  The top picture shows two different pigeons in the same habitat. These two pigeons have different color underbellies but the same pattern for the feather.  The middle picture shows two ducks that were found in the same area.  This picture shows different alleles because there is always the height allele present but in some cases(the duck on the left) it is not shown because the short allele is present.  The bottom picture shows two dogs that have the same parents that look a lot alike.  Even though they have the same genetic makeup, the dog on the left has light green eyes while the dog on the right has brown eyes.

14)Mitosis: Mitosis is the doubling of the chromosomes(and cell in general) into two identical daughter cells.  Cell division is divided into two phases called interphase and mitosis.  This cat uses mitosis when it is growing are repairing and part of its body.

 15)Meiosis: Meiosis is the process by which the sex organs create cells four daughter cells with half the number of chromosomes as the parent cell. All animals use meiosis to reproduce because it is essential to make daughter cells with half the number of chromosomes. This goat uses meiosis whenever it creates sex cells or haploid cells.

16)Phenotype: A phenotype is the physical characteristic of a present allele that is expressed in visual trait.  This hog has a phenotype of gray hair because its parents made that specific allele expressed.

19)Seed dispersal Method: Seed dispersal method is the way in which plants put their seeds out there and how they drop or get picked up by an animal.  These seeds of the Hawaiian Coffey Seeds are placed only on the outer edges of the plant so they can fall farther away from the base of the plant.

20)Tropism: Tropism is the response of an organism due to an external stimulus.  This response can be the changing in direction of the leaves, plants growing on a tree,  or the ivy growing on a stem.  this ivy started out on the bottom of one side of the stem then grew up the stem because it was there and then grew back down.