Exam 3 Jeopardy questions

Question 1

DNA nucleotides consist of a sugar, a phosphate group, and this

Answer 1

a nitrogenous base

Question 2

the backbones of DNA are this, where their subunits run in opposite directions.

Answer 2

antiparallel

Question 3

a bacterial chromosome will only have one of these whereas a eukaryotic chromosome may have thousands

Answer 3

an origin of replication

Question 4

Guanine and Cytosine are complementary because they bond with this number of hydrogen bonds

Answer 4

three

Question 5

in DNA replication, this enzyme breaks, swivels, and rejoins the DNA strands ahead of the replication fork to prevent overwinding

Answer 5

topoisomerase

Question 6

the cell cycle consists of these two phases

Answer 6

interphase and the mitotic phase

Question 7

Eukaryotic chromosomes consist of this, a complex of DNA and protein

Answer 7

chromatin

Question 8

during the phase of the mitotic phase, the mitotic spindle attaches kinetochore microtubules to the centromeres and the nuclear envelope fragments

Answer 8

prometaphase

Question 9

in plant cells, this forms during cytokinesis to separate the newly divided cells

Answer 9

a cell plate

Question 10

If a cell receives a go-ahead signal at this checkpoint, the cell wil usually complete all of the phases and divide

Answer 10

G1 checkpoint

Question 11

A diploid, human somatic cell has this many pairs of autosomes

Answer 11

22

Question 12

during this phase of meiosis, synapsis occurs when homologous chromosomes loosely pair up and are held together by the proteins of the synaptonemal complex

Answer 12

prophase 1

Question 13

in this phase of meiosis, the sister chromatids separate and move as individual chromosomes toward opposite poles of the cell

Answer 13

anaphase 2

Question 14

during meiosis 1, also referred to as this type of division, the homologs pair up and separate resulting in two haploid daughter cells

Answer 14

reductional division

Question 15

crossing over produces this type of chromosomes, which combine DNA inherited from each parent

Answer 15

recombinant chromosomes

Question 16

True-breeding plants exhibit this type of zygosity

Answer 16

homozygosity

Question 17

the F2 generation is a cross between two hybrid individuals from this generation

Answer 17

F1 generation

Question 18

this mendelian hypothesis states that two alleles for a heritable character separate during gamete formation and end up in different gametes

Answer 18

the law of segregation

Question 19

when the gene at one locus alters the phenotypic expression of a gene at a second locus, this type of inheritance is occuring

Answer 19

epistasis

Question 20

a cross between two F1 dihybrids will show that the genes are not linked if it yields this phenotypic ratio

Answer 20

9:3:3:1

Question 21

Morgan noted that in this type, the phenotypes of his flies were normal, common ones found in fly populations

Answer 21

wild type

Question 22

In order for a male to express a recessive x-linked trait, he must have this number of copies of the allele

Answer 22

one

Question 23

if a female is heterozygous for a particular gene on the X chromosome, she will be a mix of that character because one X condenses into this structure

Answer 23

a Barr body

Question 24

Down syndrome is an aneuploid condition that results from a ____ of chromosome 21

Answer 24

trisomy

Question 25

If the recombination percentage between two linked genes if 17%, then the genes are this number of centimorgans apart on the chromosome

Answer 25

17 centimorgans

Question 26

Plants exhibit this type of generation, including sporophyte and gametophyte generations

Answer 26

alternation of generations