Exam 4: Genetics and Evolution

Identical twins are to __________ as fraternal twins are to __________.

Why is sexual reproduction advantageous for a species?

The physical expression of a genetic code is called a(n)__________.

According to research by Flynn,what is happening to the overall IQ scores of people in developed countries over the last century?

"Fish were originally land-based creatures,but because they were so frequently hunted by human beings and other mammals they developed the ability to breathe under water,thus preserving their existence.That is why fish now life in the water instead of on land." Although this statement is both silly and inaccurate,it might reflect the theories of evolution postulated by __________.

In order to solve crimes,investigators on television and in real life often analyze __________,which are like biological blueprints of each organism.

The smallest unit of human heredity is a chromosome.

A zygote is produced as a result of __________ reproduction.

What are the building blocks of chromosomes?

The concept of __________ is often used to explain the stereotypical image of women as seeking out "Mr.Perfect" while trying to find a mating partner.

On average,how many of your genes do you share with each of your parents?

Only ________ cells divide through the process of meiosis.All other cells in the human body divide through the process of mitosis.

A _________is the observable property that comes from a genotype.

People who believe that every human behavior or characteristic can be explained through genetics and heredity are making the naturalistic fallacy.

A(n)__________ trait refers to the tendency of that behavior or characteristic to adjust and function according to changes in one's environment.

Encephalization refers to the increase in brain size of human beings that gives us greater cognitive skills when compared to lower animals.

The basic building block of chromosomes is RNA,or Ribonucleic Acid.

One of the most famous appearance traits of actor Bruce Willis is his widow's peak.According to genetic theory,if the gene for a widow's peak is paired with the gene for straight hair,the widow's peak will always develop in that individual.What kind of allele is a widow's peak gene?

An individual's __________ environment consists of events and conditions in the outside world.

"There is really no need to worry about the depletion of the ozone,because human beings will adapt by developing a new outer layer of skin that is more resistant to the radiation of the sun." This is a statement that suggests we can acquire characteristics that are useful for our survival.Upon whose theory of evolution might this statement be based?