Building Blocks in Life Science Chapters 1-6 Flashcards
many defects and diseases result from chance changes in heredity called mutations
corruption
flood conditions are ideal for forming fossils
catastrophe
land animals saved on the Ark and the immune system healing deadly infections both illustrate God’s deliverance from death and disaster.
Christ
adaptions are design features that suit each organism for its special role in the web of life
creation
Only a few members of a species with a large gene pool survive a major disaster (e.g. animals aboard the ark)
genetic bottleneck
several small groups separate from a large population, each with percentages of alleless different from those in the original gene pool (e.g. language groups moving away from the Tower of Babel)
genetic drift/founder effect
Members of a kind separating into distinctive subtypes as they “multiply and fill” earth’s environmental diversity (e.g. generalized bears leaving the Ark becoming black, brown, grizzly, and polar bears).
specialization
Barriers or preferences in the choice of a mate separate some parts of a gene pool from others (e.g. culture and language separates humans; size and temperament separate dogs)
reproductive isolation
Random changes in genes that often change normal genes into alleles producing defects or disease (e.g. sickle cell hemoglobin)
mutations
varieties that consistently look different but still interbreed
morphotype
black, brown, grizzly, polar, and panda bears
morphotype
differences in mating ritual or chromosomal rearrangements of the same genes (genons) prevent interbreeding
fertilotype
look-alike species of fruit files with different chromosome numbers
fertilotype
can change appearance when moved to different environments
ecotype
effects on gene regulators make willow trees dwarfs in the Arctic
ecotype