AND GENE FREQUENCIE
abidaNEW CONCEPT OF EVOLUTION Natural selection operates in two ways: 1 First way: Natural selection at individual level: One way looks at characteristics of individual animals. For example, a bird…
OBJECTIVES OF EVALUATION A HISTORICAL RESPECTIVE
Multiple Choice Questions MCQs Four options are given at the end of each statement. You should encircle one option from them. Comparative anatomy was studied by: (a) Empedocles (b) Darwin …
SUBJECTIVE QUESTION OF EVALUATION A HISTORICAL RESPECTIVE
Discuss theory of acquired character of Lamarck How Geology and fossil evidence do convinced Darwin about evolution. Discuss observation of Darwin in Galapagos Islands. Describe theory of natural selection. Write…
GEOLOGICAL TIME CHART
Era,'Period Age Millions Major Biological events .c.) o N 2 SD 0 Quaternary 0.01 Subtropical forests gave way to cooler forests and grass areas. Tertiary . 65 Modern orders of…
EVIDENCE OF EVOLUTION
BIOGEOGRAPHY The study at the geographic distribution of plants and animals is called biogeography. Biogeographers explain the reason of distribution of organisms in different regions. Biogeographic studies show that life…
THE THEORY OF EVOLUTION BY NATURAL SELECTION
Darwin returned to England in 1836. For the next 17 years, Darwin worked on the notes and specimens collected during his voyage. He made new observations. Artificial selection: He was…
EARLY DEVELOPMENT OF DARWIN’S IDEAS OF EVOLUTION
Darwin started his work on his theory of natural selection. It was a long hardworking process. Darwin wanted to convince him that change occurs over time. Darwin accepted the opinion…
A HISTORICAL PERSPECTIVE of change theories & evaluation
PRE DARWINIAN THEORIES OF CHANGE The idea of evolution did not originate with 'Charles Darwin. The ancient Greeks gave some ideas about the evolutionary changes. Empedocles (495-435 B.C.) and Aristotle…
OBJECTIVE QUESTIONS OF ANIMAL BEHAVIOR
Multiple Choice Questions MCQs Four options are given at the end of each statement. You should encircle one option from them. Some behavior patterns appear only after a specific developmental…