An increase in matter, but no increase in the number of icicles
An interaction between the icicle and the environment
No way for the icicle to move away from heat
No metabolic activity present
a decomposer that most likely feeds on nectar (a sugary liquid) from flowers
A heterotroph that may eat insects and is more closely related to a robin than to an earthworm
A scavenger that feeds on animals and reproduces asexually
An autotroph that probes tree bark for insects and is pathogenic
Nucleus–storage of nutrients
It is made of amino acid subunits that form genes.
It contains genes that may code for the production of enzymes.
It is normally passed to the next generation through a placenta.
It varies in function from one generation to the next.
Segment 1, only
Segment 3, only
Segments 2 and 3
Segments 2 and 4
A) atmospheric oxygen B) mutations C) increased mitochondria
A) radiation B) cancer C) mutations
A) salt water B) more cytoplasm C) two nuclei
A) less sunlight B) extra genes C) decreased mutation
Testes of the father
Ovaries in the mother
Presence of pathogens in antibiotics
Production of antibiotics by white blood cells
Replication of viruses that attack bacteria
Survival and reproduction of unaffected bacteria
a small population of rabbits living in a field of grass
A large population of red ants living in a forest
An endangered population of polar bears living near an iceberg
One species of bird that nests only in sugar maple trees
Lead to mutations in the parent organism
Are always harmful to the offspring
Can be the basis for evolutionary change
Only affect asexually reproducing organisms
Genetic information from one parent
Genetic information from two parents
Less genetic information than either parent
A unique combination of genetic information
Supply essential nutrients to the offspring in the form of milk
Provide nutritional support for the embryo
Provide a structure that allows the mixing of maternal and fetal blood
Produce specialized proteins used in the production and release of sperm
Formation of egg: mitosis formation of sperm: mitosis growth of embryo: meiosis
Formation of egg: mitosis formation of sperm: meiosis growth of embryo: mitosis
Formation of egg: meiosis formation of sperm: mitosis growth of embryo: meiosis
Formation of egg: meiosis formation of sperm: meiosis growth of embryo: mitosis
The lungs of the fetus become functional
Alcohol can easily enter the mouth of the fetus
Many of the essential organs of the fetus are forming
The fetus cannot excrete wastes
Recycling of gases
The evolution of the two populations will be identical.
The production of variations will stop in the two populations.
The two populations will evolve into separate species.
Autotrophic nutrition will replace heterotrophic nutrition in the two populations.
More species would be better able to survive a major environmental change.
The ecosystems in the area would become more stable.
The amount of genetic information in the species of the area would increase.
Some sources of future foods or medications would be lost.
Remain bare land indefinitely
Develop into a desert area
Develop into an entirely different type of forest after hundreds of years
Recover through gradual changes back to a point of long-term stability
Knowledge of sexual reproduction in plants
Knowledge of the structure of starch molecules
Knowledge of the development of embryos
Knowledge of the structure of a DNA molecule
A male stickleback will defend its territory against all other fish.
The stimulus for an attack is a model with red fins or a male stickleback.
The stimulus for an attack is a red underside.
Male sticklebacks turn red to attract females.
Fewer cells are in direct contact with the external environment
All cells are in direct contact with the external environment
A body type evolved that relied on fewer body cells
A body type evolved that required larger sized cells