Cells and Heredity Chapter 3

The cytoplasm is the part of the cell in which...

• DNA is located

• proteins are made

• chromosomes are located

• RNA is made

A mutation that causes antibiotic resistance in bacteria is a(n)...

• mutation that harms the bacteria

• neutral mutation

• mutation that helps the bacteria

• environmental mutation

The process by which the number of chromosomes is reduced by half to form sex cells is...

• protein synthesis

• heredity

• meiosis

• probability

In the first step of protein synthesis,...

• messenger RNA attaches to a ribosome

• messenger RNA is made using DNA as the pattern

• the ribosome releases the completed protein chain

• transfer RNA carries a specific amino acid to the ribosome

Gregor Mendel's work was the foundation for understanding why...

• the results of one genetic cross do not affect the outcome of a second cross

• sex cells have half the number of chromosomes as body cells

• protein synthesis occurs in the cytoplasm

• offspring have traits similar to those of their parents

In the genetic code, a group of three nitrogen bases codes for a specific...

• messenger RNA

• hybrid

• chromosome

• amino acid

For codominant traits, heterozygous organisms have a phenotype that shows...

• both alleles

• only the recessive allele

• neither the dominant nor the recessive allele

• only the dominant allele

During meiosis, sex cells form when chromosome pairs are...

• doubled

• copied

• separated

• combined

An organism's phenotype is its...

• physical appearance

• genetic makeup

• allele combination

• probability of occurring

An allele whose trait always shows up in an organism when the allele is present is a...

• gene

• dominant allele

• recessive allele

• hereditary factor