Heredity is

  1. Which of the following statements is FALSE regarding the lifespan of animals?

a. Small organisms tend to reach sexual maturity young, reproduce often, and die young.

b. Larger animals, who are less likely to be killed by predators, have a more leisurely existence.

c. Humans have a longer lifespan than would be expected for their size.

d. The maximum lifespan of a chimpanzee is the same as that of humans.

  1. During the 17th century, _ was a popular view of reproduction and stated that future generations were nested inside one another.

a. preformation

b. tabula rasa

c. canalization

d. nature-nurture

  1. After the discovery of sperm cells, preformationists claimed that

a. a sufficient number of sperm cells had to enter the female sex cell to trigger normal development.

b. immature organisms were housed in the head of the sperm.

c. traits were transmitted within the egg and the sperm in units, now called genes.

d. during the creation of male and female reproductive cells, gene pairs separate randomly.

  1. In the late 19th century, some physicians believed that

a. a sufficient number of sperm cells had to enter the female sex cell to trigger normal development.

b. immature organisms were housed in the head of the sperm.

c. traits were transmitted within the egg and the sperm in units, now called genes.

d. future generations were nested inside one another.

  1. _ is the genetic mechanism by which parents pass traits onto their children.

a. Gene plasticity

b. Canalization

c. Heredity

d. Heritability

  1. Heredity is

a. the process of developing interconnections between genes.

b. the genetic mechanisms by which parents pass traits onto their children.

c. an organism’s actual physical and biochemical characteristics.

d. the extent to which a trait develops normally across a range of environments.

  1. Gregor Mendel conducted experiments with __, studying the inheritance of seven pairs of traits.

a. white rats

b. fruit flies

c. livestock

d. pea plants

  1. Gregor Mendel’s experiments were important because they demonstrated

a. that information was inherited in discrete (individual) units that do not blend together.

b. that during the creation of male and female reproductive cells, gene pairs segregate randomly.

c. dominance and recessiveness.

d. all of these.

  1. Mendel cross-bred pea plants that produced yellow seeds with pea plants that produced green seeds. If green is recessive, the resulting seeds of this first generation would be

a. yellowish-green.

b. in a ratio of three green seeds to one yellow seed.

c. yellow.

d. green.

  1. Mendel cross-bred pea plants that produced yellow seeds with pea plants that produced green seeds. This first generation-cross produced only yellow seeds. When the yellow seeds from this first generation were crossed, the next generation produced

a. yellowish-green seeds.

b. seeds in a ratio of three green to one yellow.

c. seeds in a ratio of three yellow to one green.

d. all yellow seeds again.

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