Grade 10
Core Themes, Content Standards and Expected Performances
Strand V: Genetics, Evolution and Biodiversity
Content Standards
Expected Performances
Heredity and Evolution – What processes are responsible for life’s unity and diversity?
10.4-In sexually reproducing organisms, each offspring contains a mix of characteristics inherited from both parents.
♦ Genetic information is stored in genes that are located on chromosomes inside the cell nucleus.
♦ Most organisms have two genes for each trait, one on each of the homologous chromosomes in the cell nucleus.




Explain how meiosis contributes to the genetic variability of organisms.

Use the Punnet Square technique to predict the distribution of traits in mono- and di-hybrid crossings.

Deduce the probable mode of inheritance of traits (e.g., recessive/dominant, sex-linked) from pedigree diagrams showing phenotypes.

Describe the difference between genetic disorders and infectious diseases.

Heredity and Evolution – What processes are responsible for life’s unity and diversity?
10.5 - Evolution and biodiversity are the result of genetic changes that occur over time in constantly changing environments.
♦ Mutations and recombination of genes create genetic variability in populations.
♦ Changes in the environment may result in the selection of organisms that are better able to survive and reproduce.



Explain how the processes of genetic mutation and natural selection are related to the evolution of species.

Explain how the current theory of evolution provides a scientific explanation for fossil records of ancient life forms.

Describe how structural and behavioral adaptations increase the chances for organisms to survive in their environments.

Science and Technology in Society – How do science and technology affect the quality of our lives?
10.6 - Living organisms have the capability of producing populations of unlimited size, but the environment can support only a limited number of individuals from each species.
♦ Human populations grow due to advances in agriculture, medicine, construction, and the use of energy.
♦ Humans modify ecosystems as a result of rapid population growth, use of technology, and consumption of resources.



Describe the factors that affect the carrying capacity of the environment.

Explain how change in population density is affected by emigration, immigration, birth rate and death rate, and relate these factors to the exponential growth of human populations.

Explain how technological advances have affected the size and growth rate of human populations throughout history.