Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are beginning to only mate with the type of males with the tail they prefer. What type of reproductive barrier is this?

The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of reproductive barrier is this?

The term for the formation of new and distinct species over the course of evolution is...

What is a species?

A new river forms and splits two populations, causing ______________ speciation

Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures. What type of speciation is this?

The emergence of new rivers or streams is a type of ____________ isolation.

It is the process of dividing the DNA of a cell into two new nuclei.

In mitosis, the two resulting cells are

Where does a cell contain its genetic material?

"T" is dominant, "t" is recessive. If an organism has the genes "Tt."

Which will trait will result

If it is true breeding- What percent will be tall plants if T is dominant for tall pea plants?

Genotype refers to:

What is a phenotype

having two of the same genes for the trait (sometimes called purebred).

having two different genes for a trait (sometimes called hybrid).

G = green, g = yellow

The genotype for a yellow plant is...

Term for an organism that display two dominant phenotypes at the same time

Sex cells are produced through the process of

Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.

An allele whose trait only shows up when no dominant allele is present.

What does DNA stand for?

DNA is a polymer made of:

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

Guanine bonds with ______________.

What will the matching sequence be on a strand that reads AAGCTAT?

What are the three components of a nucleotide?

the process of making a copy of DNA

Copying and carrying the genetic code is the responsibility of which molecule?

The base Uracil is only found in which molecule?

DNA never leaves the nucleus;

Proteins are made of which molecule?

RNA is a two sided helix

Muscles are made up of proteins

How do you "win" at natural selection?

Survival of the Fittest and Evolution were proposed by what scientist?

When every organism of a species has died.

What word describes a trait that helps an organism survive in its environment?

Change over time

Responsible for creating sex cells are gametes called sperm and egg.

The first fertized cell of a new organism is called

In meiosis- Why is it that the phases occur two times versus one in mitosis?

An example of a somatic cell would be

For humans our diploid number is

For humans, what is our haploid number?

The arrows in a food chain or web represents what?

Organisms that create their own energy from sunlight or chemicals

Which of the following would provide the most energy in an ecosystem?

An organism that obtains energy by eating other organisms.

What's a food web?

What does an energy pyramid represent?