Question 1

Mitosis is most correctly defined as

Accepted Answer

A) DNA replication. 
B) RNA transcription. 
C) nuclear division. 
D) cytoplasmic division. 
E) ATP production.

Question 2

In regard to blood type,what are the possible genotypes if the phenotype is B?

Accepted Answer

A) IAIB and IBi 
B) ii and IA 
C) IA and IB 
D) IBIB and IBi 
E) IB and ii

Question 3

The study of the transmission of biological information from one generation to the next is called

Accepted Answer

A) genetics. 
B) anthropology. 
C) genealogy. 
D) reproductive biology. 
E) molecular biology.

Question 4

In a genetic system of complete dominance,a recessive allele is expressed

Accepted Answer

A) only in the homozygous condition. 
B) only in the heterozygous condition. 
C) only when it is sex-linked. 
D) only when it occurs on an autosome. 
E) whenever it is present.

Question 5

Cytokinesis refers to

Accepted Answer

A) DNA replication. 
B) RNA transcription. 
C) nuclear division. 
D) cytoplasmic division. 
E) ATP production.

Question 6

Chromosomes which are not involved in the determination of sex are called

Accepted Answer

A) heterosomes. 
B) nucleosomes. 
C) eusomes. 
D) polysomes 
E) autosomes.

Question 7

Changes in single nucleotides on DNA are called

Accepted Answer

A) euploidy. 
B) polyploidy. 
C) deleterious mutations. 
D) autosomal mutations. 
E) point mutations.

Question 8

The studies of __________ originated the modern study of genetics.

Accepted Answer

A) Linnaeus 
B) Mendel 
C) Darwin 
D) van Leeuwenhoek 
E) Wallace

Question 9

The pentose sugar of DNA is

Accepted Answer

A) deoxyribose. 
B) glucose. 
C) fructose. 
D) deoxygenose. 
E) ribose.

Question 10

The linear form of RNA that is responsible for carrying a set of genetic instructions into the cytoplasm is

Accepted Answer

A) mRNA. 
B) tRNA. 
C) rRNA. 
D) dRNA. 
E) cRNA.

Question 11

For each oogonium that goes through oogenesis,__________ egg(s)is/are produced.

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) six

Question 12

Alleles are

Accepted Answer

A) always dominant. 
B) always recessive. 
C) always incompletely dominant. 
D) alternate forms of a gene. 
E) the same forms of a gene.

Question 13

The expected percentage of offspring in the F2 generation possessing the recessive trait following a monohybrid cross would be

Accepted Answer

A) 0. 
B) 25. 
C) 50. 
D) 5. 
E) 100.

Question 14

The expected phenotypic ratio in the F2 generation of a dihybrid cross is

Accepted Answer

A) 9:3:3:1. 
B) 1:2:2:1. 
C) 1:3:3:1. 
D) 27:9:9:1. 
E) 3:1:3:1.

Question 15

A/An __________ can be defined as a sequence of bases in DNA that codes for the synthesis of one polypeptide.

Accepted Answer

A) codon 
B) replicon 
C) Okazaki fragment 
D) gene 
E) polyribosome

Question 16

The study of the structure and function of DNA and RNA is called

Accepted Answer

A) molecular zoology. 
B) autosomal genetics. 
C) molecular genetics. 
D) physiological genetics. 
E) molecular physiology.

Question 17

In the structure of DNA,which of the following is a correct base pair?

Accepted Answer

A) adenine-cytosine 
B) thymine-guanine 
C) cytosine-uracil 
D) guanine-uracil 
E) adenine-thymine

Question 18

An organism is said to be __________ if it carries two identical alleles for a certain trait.

Accepted Answer

A) heterozygous 
B) homologous 
C) homozygous 
D) monohybrid 
E) dihybrid

Question 19

The somatic cells of animals are normally in the __________ condition.

Accepted Answer

A) diploid 
B) triploid 
C) polyploid 
D) haploid 
E) aneuploid

Question 20

A chemical that inhibits the function of histones 1 to 4,but not histone 5,will disrupt which of the following?

Accepted Answer

A) The ability of a cell to wind its DNA into a nucleosome structure. 
B) The ability of a cell to transcribe genes to produce mRNA and subsequently proteins. 
C) The ability of a cell to unwind from the chromosome structure to linear DNA. 
D) The ability of a cell to translate mRNA into proteins at ribosomes.

Exam 3: Cell Division and Inheritance