Biology EOC Review -Genetics, Evolution, Natural Selection, Body

Front

What is the effect of high blood viscosity on blood flow?

Back

High viscosity of blood causes increased resistance in the blood vessels, leading to slow blood flow.

Front

What is the correct sequence of events in the formation of a human fetus?

Back

Fertilization -> zygote -> blastocyst -> embryo.

Front

Where does fertilization of the egg most likely occur in the female reproductive system?

Back

Fertilization most likely occurs in the fallopian tubes.

Front

What are the key observations of Charles Darwin's theory of natural selection?

Back

1. Organisms produce more offspring than can survive. 2. Species today descended with modifications from ancestral species. 3. Organisms with advantages will survive and reproduce.

Front

What is hemophilia and how is it inherited?

Back

Hemophilia is a sex-linked, recessive trait that affects blood clotting, inherited through X chromosomes.

Front

What is the probability of a son having hemophilia if his father does not have it and his mother is a carrier?

Back

There is a 50% chance that their sons will have hemophilia.

Front

What is natural selection?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define 'zygote'.

Back

A zygote is the fertilized egg that results from the union of a sperm and an egg.

Front

What is a blastocyst?

Back

A blastocyst is a structure formed in the early development of mammals, consisting of an inner cell mass that will become the embryo.

Front

What is the role of the embryo in human development?

Back

The embryo is the developing organism from the blastocyst stage until the end of the eighth week of pregnancy.