Exam 7: Are You Only as Smart as Your Genes? Mendelian and Quantitative Genetics

Assuming that the genes are on separate chromosomes, an organism with the genotype AaBb will make gametes in the following proportions: 1/4 AB, 1/4 Ab, 1/4 aB, and 1/4 ab. This is an example of

A mutation in a gene

The IQ test developed by Alfred Binet was designed to

Which of the following was a conclusion based on experiments with "maze-bright" and "maze-dull" rats?

Fraternal twins are also referred to as

-How many different types of offspring (genotypes)are possible as a result of this cross, according to the Punnett square?

How many different kinds of gametes can be made by an individual with the genotype AaBb?

In pea plants, the allele for purple flowers (P)is dominant to the allele for white flowers (p). In a cross between a purple-flowered plant and a white-flowered plant, all 73 of the offspring plants had purple flowers. Which of the following most likely describes the cross above?

A ________ trait shows continuous variation, where there is a large range of phenotypes in a population (for example, height or skin color).

A ________ cross is a genetic cross involving two traits.

A ________ trait has an "off-or-on" character, where individuals have either one phenotype or another (for example, purple vs. white flowers).

Which of the following is a true statement about chromosome number?

The difference between the lowest and highest values on the x-axis of a normal distribution curve represents the ________ for the population that is being studied.

The ________ of an organism is the genetic makeup of that organism.

Cystic fibrosis is caused by the allele f, which is completely recessive to the normal dominant allele F. Consider a couple with the genotype Ff. What is the chance that their second child will develop cystic fibrosis?

In a certain plant species, thick-shelled seeds are caused by the dominant allele T, while thin-shelled seeds are caused by the recessive allele t. Consider an individual plant that has thin-shelled seeds. What is the genotype of this individual?

If the DNA contained in the chromosomes of an organism is similar to an instruction manual, then what are the genes "instructing" the cell to do?

The highest point on a bell-shaped curve represents the

Segregation of alleles occurs when

DNA is often likened to an instruction manual. According to this analogy, the typographical errors that would inevitably result when the DNA "manual" is transcribed would be similar to