(Big Idea 3, #1) A diploid organism's somatic cells have two homologous copies of each chromosome. Most mammals are diploids, including this giraffe.
(Big Idea 3, #2) Ethylene is a natural plant hormone used to force fruits to ripen. It is a flammable gas with the chemical formula C2H2. This banana was exposed to ethylene as is visible by the brown spots on it.
(Big Idea 3, #3) A eukaryote is a cell whose DNA is protected by a nuclear membrane. All plants, fungi, and animals are eukaryotic organisms, including this gecko.
(Big Idea 3, #5) This skink is an example of an animal that has gametes. A gamete is a cell that fuses with another gamete to fertilize it. The female gamete is an ovum while the male gamete is sperm.
(Big Idea 3, #9) A flock is a group of birds who fly or forage in large numbers for various reasons including safety. These flamingos make up a flock.
(Big Idea 3, #13) This tree frog is an example of Batesian mimicry, or when a harmless organism resembles a dangerous and/or poisonous one. This mimicry is useful against predators whose associative learning patterns keep them from attacking potential prey such as this tree frog due to its resemblance to a poison dart frog.
(Big Idea 3, #15) Mitosis is the process by which a cell splits into two identical daughter cells. This bird goes through mitosis whenever it grows or when it regenerates tissue from an injury.
(Big Idea 3, #16) Meiosis is the process by which a nonsomatic cell splits into four daughter cells whose genes vary due to crossing over. This hornbill goes through meiosis to generate gametes it can use to create offspring.
(Big Idea 3, #17) The phenotype of an organism are all of its traits that can be observed visibly. These zebras' phenotypes include their stripped pattern.
(Big Idea 3, #19) This yogurt contains prokaryotes such as bacteria. Prokaryotes are mostly unicellular organisms without a nuclear envelope surrounding their DNA.
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