DNA _____.


is only found in eukaryotes

is found in the nucleus of prokaryotes

controls the physical traits of an organism

determines the sequence of amino acids in proteins

can control certain organism behavior

is a long, single chain of paired nucleotides


Which of the following statements is true?

Chromosomes occur in pairs in higher plants and animals.

There are more chromosomes in a cell than there are genes.

All organisms have the same number of chromosomes.

A karyotype cannot determine if an organism is male or female.


Choose all the answers that apply.


Genes _____.

are made of DNA

are carried on chromosomes

determine physical and chemical traits

can cause genetic disorders

are made of chromosomes


In DNA, adenine (A) always pairs with _____.

cytosine (C)

guanine (G)

thymine (T)

adenine (A)


Binary fission _____.

is a type of asexual reproduction

is a type of sexual reproduction

creates identical copies of the parent cell

is the type of reproduction used by bacteria

occurs in organisms that do not have a membrane bound nucleus