Big Idea 3

Big Idea 3: 1. Diploid

A diploid is a cell with two sets of chromosomes - one set came from a mother and the other came from a father (the word root di means "two.) In humans, the diploid number of chromosomes is 46. All animals are made of diploid cells (with the exception of their sex cells.) This Lady Ross' Turaco falls under the domain of "all animals," so it represents a diploid.

Big Idea 3: 3. Eukaryote

A eukaryote is an organism whose cells have a true nucleus bounded by a membranous nuclear envelope. Many kingdoms of life, including animals, plants, and fungi are eukaryotic. This tawny frogmouth owl is an animal, so it is a eukaryote.

Big Idea 3: 5. Gamete

A gamete is a reproductive cell in animals and plants that transmits genes from one generation to the next. These salmon eggs, if fertilized, would have become salmon. However, they were not fertilized, so they remain in their gamete state.

Big Idea 3: 6. Haploid

A haploid cell is one that only contains a single chromosome set - in humans, the number of chromosomes in a haploid cell is 23. These chicken eggs were never fertilized by a haploid cell of a male chicken, so they remain haploid.

Big Idea 3: 7. Evidence of different alleles #1

My cat demonstrates evidence of different alleles in its fur color. She has some silver fur and some black fur (as well as a lightish brown color that I have never seen until I took this photo.) Her fur shows the property of codominance because she has alleles coding for black color and for silver color.

Big Idea 3: 7. Evidence of different alleles #2

This zebra has different alleles for the color of its coat. It has both white stripes and black stripes. It probably has an allele coding for black color and an allele coding for proteins that do not work (showing up in the coat as white.)

Big Idea 3: 9. Flock, herd, or schooling

A flock is a group of birds. These flamingos are all clumped in a flock. Flocking is the behavior exhibited when a group of birds forages or flies as a unit.

Big Idea 3: 11. Genetically modified organism

A genetically modified organism is one whose genetic material has been modified through genetic engineering. Corn is one of the most frequently genetically modified types of organisms because it is legal to use the pesticide Bacillus thuringiensis on it.

Big Idea 3: 17. Phenotype

An organism's phenotype is defined as its visible traits. These bell peppers have differing phenotypes; some have red color, some have orange, and some have yellow. Although bell peppers only change colors depending on how long they have been left on the vine, their change in color still equates to a change in phenotype.

Big Idea 3: 20. Seed dispersal method

A seed dispersal method is the way by which seeds are transported away from their parent plant. Plants rely on a seed dispersal method due to their limited mobility. Dandelions, for example, have very lightweight seeds that can be picked up by the wind and carried far away. In this picture, some dandelion seeds can be seen already blown off the flower.