Vocabulary: L
1.
2.
3.
4.
Adaptation
Speciation
Darwin
Homologous structures
A. Developed the theory of natural selection
using evidence
B. Similar anatomical structures showing
common ancestry
C. Inherited trait that allows individuals to
survive better
D. New species form due to isolation

A. Charles Darwin.

B. Homologous structure

C. Adaptation.

D. Speciation.

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.

Heredity refers to the transfer of traits (specific characteristics) from the parent of a living organism to her offspring through sexual reproduction or asexual production. Some examples of hereditary traits are dimples, tongue rolling, baldness, handedness, freckles, curly hair, color blindness, height, etc.

A. Charles Darwin: he developed the theory of natural selection based on certain evidences. Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.

B. Homologous structure: it involves similar anatomical structures that are having common ancestry or from the same lineage.

C. Adaptation: it is an inherited trait that allows individuals to survive better.

D. Speciation: it is an ecological and biological process through which new species are formed due to isolation.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.