Question 1

During interphase of the cell cycle,__________.

Accepted Answer

A) the nuclear membrane disappears 
B) DNA content essentially doubles 
C) sister chromatids move to opposite poles 
D) DNA recombines 
E) RNA replicates 
A) the nuclear membrane disappears 
B) DNA content essentially doubles 
C) sister chromatids move to opposite poles 
D) DNA recombines 
E) RNA replicates

Question 2

The meiotic cell cycle involves_______ number of cell divisions and _______ number of DNA replications .

Accepted Answer

A) two; zero 
B) two; two 
C) two; one 
D) one; one 
E) one; two 
A) two; zero 
B) two; two 
C) two; one 
D) one; one 
E) one; two

Question 3

An organism with a diploid chromosome number of 46 will produce_______ combinations of chromosomes at the end of meiosis.

Accepted Answer

A) 46 
B) 23 
C) 8388608 
D) 529 
E) 7.04 × 1013 
A) 46 
B) 23 
C) 8388608 
D) 529 
E) 7.04 × 1013

Question 4

The centromere of a chromosome separates during __________ .

Accepted Answer

A) telophase 
B) prophase 
C) interphase 
D) anaphase 
E) prometaphase 
A) telophase 
B) prophase 
C) interphase 
D) anaphase 
E) prometaphase

Question 5

There is about as much nuclear DNA in a primary spermatocyte as in _______spermatids.

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 0)5 
E) 3 
A) 1 
B) 2 
C) 4 
D) 0)5 
E) 3

Question 6

The stage at which "sister chromatids go to opposite poles" immediately follows which of the stages listed below?

Accepted Answer

A) mitotic metaphase 
B) metaphase of meiosis I 
C) metaphase of meiosis II 
D) A and B 
E) A and C 
A) mitotic metaphase 
B) metaphase of meiosis I 
C) metaphase of meiosis II 
D) A and B 
E) A and C

Question 7

Which of the following is true about the second meiotic division?

Accepted Answer

A) Nondisjunction would lead to extra bivalents forming. 
B) The products are four identical gametes. 
C) Sister chromatids are pulling apart. 
D) Homologous chromosomes are pulling apart. 
E) Synapsis occurring in the second meiotic division. 
A) Nondisjunction would lead to extra bivalents forming. 
B) The products are four identical gametes. 
C) Sister chromatids are pulling apart. 
D) Homologous chromosomes are pulling apart. 
E) Synapsis occurring in the second meiotic division.

Question 8

Which of the following is true about sex- determining chromosomes?

Accepted Answer

A) They have the same gene configuration and same loci. 
B) They act like homologous chromosomes during meiosis so each gamete will get one sex chromosome. 
C) They are always metacentric. 
D) They are independent during meiosis. 
E) They do not participate in meiosis. 
A) They have the same gene configuration and same loci. 
B) They act like homologous chromosomes during meiosis so each gamete will get one sex chromosome. 
C) They are always metacentric. 
D) They are independent during meiosis. 
E) They do not participate in meiosis.

Question 9

You have identified a mutant in human cells that when shifted to 37°C,the microfilaments depolymerize fall apart).Which of the following would be true about this mutant at 37°C?

Accepted Answer

A) The mitochondria would no longer work. 
B) The endoplasmic reticulum could still import polypeptides but could no longer synthesize lipids. 
C) The cells would change shape. 
D) The cells would no longer be able to produce ATP. 
E) The sister chromatids would no longer be attached to each other. 
A) The mitochondria would no longer work. 
B) The endoplasmic reticulum could still import polypeptides but could no longer synthesize lipids. 
C) The cells would change shape. 
D) The cells would no longer be able to produce ATP. 
E) The sister chromatids would no longer be attached to each other.

Question 10

Which of the following are the areas where chromatids intertwine during meiosis?

Accepted Answer

A) nondisjunction 
B) tetrad 
C) bivalent 
D) synapsis 
E) chiasma 
A) nondisjunction 
B) tetrad 
C) bivalent 
D) synapsis 
E) chiasma

Question 11

The accompanying sketch depicts a cell from an organism in which 2n = 2 and each chromosome is metacentric.   Which of the following is the correct stage for this sketch?

Accepted Answer

A) anaphase of meiosis I 
B) telophase of mitosis 
C) telophase of meiosis II 
D) anaphase of meiosis II 
E) anaphase of mitosis 
A) anaphase of meiosis I 
B) telophase of mitosis 
C) telophase of meiosis II 
D) anaphase of meiosis II 
E) anaphase of mitosis

Question 12

In a healthy male,how many sperm cells would be expected to be formed from a)400 primary spermatocytes? b)400 secondary spermatocytes?

Accepted Answer

A) a)800; b)800 
B) a)1600; b)800 
C) a)1600; b)1600 
D) a)400; b)400 
E) a)100; b)800 
A) a)800; b)800 
B) a)1600; b)800 
C) a)1600; b)1600 
D) a)400; b)400 
E) a)100; b)800

Question 13

List,in order of appearance,all the cell types expected to be formed during spermatogenesis.

Accepted Answer

A) primary spermatocyte,secondary spermatocyte,spermatozoa,spermatid,spermatogonia 
B) spermatogonia,primary spermatocyte,secondary spermatocyte,spermatid,spermatozoa 
C) spermatozoa,spermatid,spermatogonia ,primary spermatocyte,secondary spermatocyte 
D) primary spermatocyte,secondary spermatocyte,spermatid,spermatozoa,spermatogonia 
E) spermatogonia,spermatozoa,spermatid,primary spermatocyte,secondary spermatocyte 
A) primary spermatocyte,secondary spermatocyte,spermatozoa,spermatid,spermatogonia 
B) spermatogonia,primary spermatocyte,secondary spermatocyte,spermatid,spermatozoa 
C) spermatozoa,spermatid,spermatogonia ,primary spermatocyte,secondary spermatocyte 
D) primary spermatocyte,secondary spermatocyte,spermatid,spermatozoa,spermatogonia 
E) spermatogonia,spermatozoa,spermatid,primary spermatocyte,secondary spermatocyte

Exam 2: Mitosis and Meiosis

During interphase of the cell cycle,__________.

The meiotic cell cycle involves_______ number of cell divisions and _______ number of DNA replications .

An organism with a diploid chromosome number of 46 will produce_______ combinations of chromosomes at the end of meiosis.

The centromere of a chromosome separates during __________ .

There is about as much nuclear DNA in a primary spermatocyte as in _______spermatids.

The stage at which "sister chromatids go to opposite poles" immediately follows which of the stages listed below?

Which of the following is true about the second meiotic division?

Which of the following is true about sex- determining chromosomes?

You have identified a mutant in human cells that when shifted to 37°C,the microfilaments depolymerize fall apart).Which of the following would be true about this mutant at 37°C?

Which of the following are the areas where chromatids intertwine during meiosis?

The accompanying sketch depicts a cell from an organism in which 2n = 2 and each chromosome is metacentric. Which of the following is the correct stage for this sketch?

In a healthy male,how many sperm cells would be expected to be formed from a)400 primary spermatocytes? b)400 secondary spermatocytes?

List,in order of appearance,all the cell types expected to be formed during spermatogenesis.

Introduction to Genetics

Mendelian Genetics

Extensions of Mendelian Genetics

Chromosome Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophages

Sex Determination and Sex Chromosomes

Chromosome Mutations: Variation in Number and Arrangement

Extranuclear Inheritance

DNA Structure and Analysis

DNA Replication and Recombination

DNA Organization in Chromosomes

The Genetic Code and Transcription

Translation and Proteins

Gene Mutation,dna Repair,and Transposition

Regulation of Gene Expression in Bacteria

Transcriptional Regulation in Eukaryotes

Post-Transcriptional Regulation in Eukaryotes

Epigenetic Regulation in Eukaryotes

Recombinant Dna Technology

Genomic Analysis

Applications of Genetic Engineering and Biotechnology

Developmental Genetics

Cancer Genetics

Quantitative Genetics and Multifactorial Traits

Population and Evolutionary Genetics

CRISPR and Genomic Editing

DNA Forensics

Genomics and Precision Medicine

Genetically Modified Foods

Gene Therapy

Advances in Neurogenetics: The Study of Huntington Disease

Filters

The meiotic cell cycle involves_ number of cell divisions and _ number of DNA replications .