Final

If all of the sex cells of an organism have the T factor the genotype of that organism must be

The soil that is frozen all years in the tundra where the top thaws in summer is called

In the process of natural selection the organisms that are best suited to their environment are most likely to survive,

An organisms can be homozygous for some traits and _____ for others

A new ……. Can from when a grip of individuals became isolated from the main group

A chart to predict of genetic crosses known as an

Bacteria and fungi are known as

Genes are carried from parents to offspring on structures called

If an ______\ factor is present it’s trait will appear in the organism

The forelimbs of a bird and a mammal are examples of

The only traits that can be acted upon by natural selection are those controlled by

An____\__ is a well tested concept that explains a wide range of observations

Natural selection is affected by …..

The energy role of the organism in a food chain always an

Medal used the principles of _____ to predict what percent of offspring would show a particular trait

Earths history spans more than ………years

The least amount of energy is available at the Level of an energy pyramid

The energy role of a grizzly bears is that of an

If the D represents the dominant factor of a gene then _ representes recessive factors

Scientists show how groups of organisms may be related by placing them on a diagram called

Most fossils are found in

Similarities in early development of chickens and opussums suggest that these animals share common

An organism that only eats plants is an organism

A diagram called an_____ show how much energy is available at each level of a food web

In a cross between two hybrid Tt pea plants ____ percent of the offspring will be Tt

When minerals replace bone and …… fossil formed

The fossil record provides info about species that are ______ or have died out

Organisms that belong to the same ____ usually mate and produce fertile offspring

An inherited characteristic that improves an organism chance of survival and to reduce