Genes, Reproduction, and Traits

Which of the following best defines heredity?

• the passing of genetic information from one generation to the next

• the joining of sex cells to form the first cell of a new organism.

• the cycle through which an organism grows from a young form to a mature form.

• the technology that enables scientists to insert genetic information from one organism into another.

Every organism has a set of instructions that determines its traits. Which term describes the process through which it receives this set of instructions?

• adaptation

• heredity

• repitition

• generation

Which organelle is where genetic information is stored?

• Vacuole

• Mitochondria

• Nucleus

• Cytoplasm

What parts of a cell are most involved in determining the shape of your face?

• Genes, chromosomes, and nucleus

• Cytoplasm, chloroplasts, and genes

• Vacuoles, nucleus, and chromosomes

• Chromosomes, chloroplasts, and vacuoles

The hydra is a very small, simple animal that lives in water. Hydras reproduce asexually by budding,

a process in which a bud breaks off an adult hydra and floats away. Which of these describes a hydra?

• A hydra bud contains genetic material from its two parents.

• A hydra bud is genetically identical to the parent hydra.

• A hydra bud has different mutations than the parent hydra.

• A hydra bud has half as much genetic material as the parent hydra

An organism reproduces asexually. What percentage of the offspring’s genetic information is the same as the genetic information of the parent?

• 25%

• 50%

• 75%

• 100%

In one student’s family, two of the children have curly hair, one child has wavy hair, and the fourth child has straight hair. Which of these processes is responsible for the variety of hair texture in this family?

• Asexual reproduction

• Binary Fission

• Sexual Reproductino

• Vegetative Propogation

Certain species of whiptail lizards have only female individuals and no males. These lizards reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?

• They are smaller than lizards that reproduce sexually.

• They are more likely to develop a variety of tail lengths.

• A new population can be established by a single individual in a relatively short period of time.

• All the members of a population are genetically very similar and less able to survive environmental changes.

Hair color, height, eye color and freckles are examples of human traits. What do we call the physical expression of the genetic material of an organism?

• genetics

• heredity

• genotype

• phenotype

Heterozygous is when...

• the alleles are the same.

• the alleles are different.

• the alleles are absent.

• the alleles are present.