Natural Selection and Evidence of Evolution REVIEW

How did each influence Darwin in developing his theory of Natural Selection? MATCHING: A. Thomas Malthus B. Charles Lyell C. Alfred Wallace 1. Came up with the same idea of Natural Selection as Darwin and prompted Darwin to publish his book 2. Geologist that recognized the Earth is extremely old and changes slowly over time through the rock cycle. 3. Explored population growth in humans and the potential effects of the lack of resources available.

4. Which is NOT an example of Selective Breeding? Different breeds of cows for milk and beef productions. Various Breeds of dogs Antibiotic Resistance found in bacteria Various flavors that exist in different types of corn crops raised on farms

5. List the 5 Steps of Natural Selection? 1. 2. 3. 4. 5.

6. Complete the steps of how giraffes evolved the adaptation of a long neck. All giraffes overproduce too many young Among the giraffe population are inherited variations in neck size. ? Over time the population of giraffes all had longer necks as an adaptation.

7. What is the FIRST step of Speciation? Divergence Natural Selection Mutation Separation 8. Which is an Example of Speciation? Tuskless Elephants Light & Dark variations of Peppered Moths Darwin’s Finches Breeds of Dogs

9. Which of the following is NOT considered an isolating mechanism that helps to keep a gene pool of a population separate from other species? Mating rituals to attract a mate Producing more young than will reach adulthood Breeding seasons at different times of the year Sterile hybrids created from two species breeding

Relative Age Dating What is the youngest Numbered Feature? (1, 2, 3, 4, or 5) What is the oldest Numbered Feature? (1, 2, 3, 4, or 5) Which unconformity is older #3 (igneous intrusion) OR #2 (fault line)? Why?

13. Which TWO fossils are considered good index fossils and WHY 13. Which TWO fossils are considered good index fossils and WHY? (draw the index fossils for your answer)

Absolute Dating: Half-life Problems When a radioactive substance first cools, how much is radioactive? If a half-life of the substance is 100 years, what % of the material is still radioactive after 200 years? If 6.25% of the material is still radioactive, how old is the substance being measured if each half-life is 100 years?

Comparative Anatomy 17. Are the wings in the dragon fly and butterfly used for flying considered: (Homologous, Vestigial, OR Neither)

Comparative Anatomy 18. Are the flightless wings on the kiwi and lousefly considered: (Homologous, Vestigial, OR Neither)

Comparative Anatomy Are the fins on a shark and dolphin used for swimming considered: (Homologous, Vestigial, OR Neither)

Comparative Embryology 20. List TWO features we have in early embryo development that we lose in later stages of development.

ANSWERS C B A Overproduction; Inherited Variation; Struggle to Survive; Successful Reproduction; Adaptation #3 & 4 – Giraffes with larger necks could more easily reach food with less competition. They survived and passed on their long neck traits D C B 5 1 2 – Because the igneous intrusion cuts across the already existing fault line.

ANSWERS 13. They are only found in one layer each at multiple sites 100% 25% 400 years Homologous Vestigial Neither Need TWO – Tail, Gill slits, 2 chambered heart