1st 9 Weeks Quiz (Comprehensive)

Which statement describes the relationship between DNA and an organism's phenotype?

• DNA is expressed as a chromosome which determines the expressed trait of the organism.

• DNA is expressed as a gene which determines the expressed trait of the organism.

• DNA is expressed as a gene which determines the genetic make-up of the organism.

• DNA is expressed as a chromosome which determines the genetic make-up of the organism.

The genotype for a specific trait is written with two letters such as BB, Bb, or bb, and a cross for a trait can be written BB x Bb. What do the two letters of the genotype represent?

• Traits are passed from both parents to offspring through pairs of genes.

• Genes for a trait come from either the mother or father but not both parents.

• An organism's genotype is a result of its phenotype.

• An organism's outward appearance is its phenotype.

What relationship exists between genes and chromosomes?

• Genes and chromosomes produce alleles which determine the phenotype of offspring.

• Genes are made up of chromosomes which move from the nucleus to the cytoplasm.

• Genes produce chromosomes which transmit traits from one generation to another.

• Genes are located on chromosomes which are found in the nucleus of cells.

A student listed the different life processes that depend on mitosis. Which process did he list incorrectly?

• waste elimination

• dead cell replacement

• body growth

• asexual reproduction

Budding and binary fission are both forms of asexual reproduction in one-celled organisms. What is known about the daughter cells produced as a result of the two processes?

• Mitosis ensures that they are identical to one another and to the original parent cell.

• Respiration ensures that they have half of the genetic information from the original parent cell.

• Respiration ensures that they are identical to one another and to the original parent cell.

• Mitosis ensures that they have half of the genetic information from the original parent cell.

A gardener cut her finger while pruning shrubs. She noticed that after two weeks the wound had nearly healed with just a small scar remaining. Which statement describes what will happen next?

• The cells near the wound will produce identical cells by mitosis to repair the damaged tissues.

• A material will be released by the injured cells that will cover the wound and repair the cells.

• Cells will be transported from distant areas to the wound to cover the injured area.

• Each one of the individual cells near the wound will grow in size to cover the injured part.

Which statement about DNA is correct?

• A male child's DNA will exactly match the father's DNA.

• A female child's DNA will exactly match the mother's DNA.

• A child's DNA will show similarities to both the mother's and father's DNA.

• A child's DNA will be unrelated to the mother's or father's DNA.

In humans, B is the allele for brown eyes and b is the allele for blue eyes. Two brothers have brown, but one of them has both B and b alleles while the other has B alleles. Which statement is true about the brothers?

• They have the same genotype and phenotype.

• They have different phenotypes and genotypes.

• They have the same phenotype, but different genotypes.

• They have the same genotypes, but different phenotypes.

A mutation in which of the following types of cells could be passed on to an organism's offspring?

• blood

• egg

• muscle

• nerve

Which of the following characteristics is a lion LEAST likely to pass on to its offspring?

• length of its tail

• size of its body

• scars on its leg

• color of its fur