Question 1

In a flowering plant, the male part of the flower (the stamen)produces haploid microspores that divide by _____ to produce sperm.

Accepted Answer

A) mitosis 
B) meiosis 
C) gametogenesis 
D) spermatogenesis 
E) fertilization 
A) mitosis 
B) meiosis 
C) gametogenesis 
D) spermatogenesis 
E) fertilization A

Question 2

Which of the following pairs are BOTH prokaryotes?

Accepted Answer

A) Eubacteria and higher plants 
B) Archaea and eubacteria 
C) Higher animals and archaea 
D) Viruses and higher animals 
E) Humans and eubacteria 
A) Eubacteria and higher plants 
B) Archaea and eubacteria 
C) Higher animals and archaea 
D) Viruses and higher animals 
E) Humans and eubacteria B

Question 3

Which of the following statements is FALSE?

Accepted Answer

A) Errors in chromosome separation are rarely a problem for an organism. 
B) Errors in chromosome separation can result in a miscarriage. 
C) Errors in chromosome separation can result in cancer. 
D) Errors in chromosome separation can result in a child with severe handicaps. 
E) Errors in chromosome separation can cause numerous problems for an organism. 
A) Errors in chromosome separation are rarely a problem for an organism. 
B) Errors in chromosome separation can result in a miscarriage. 
C) Errors in chromosome separation can result in cancer. 
D) Errors in chromosome separation can result in a child with severe handicaps. 
E) Errors in chromosome separation can cause numerous problems for an organism. A

Question 4

A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42).As in humans, sex chromosomes determine sex: XX in females and XY in males.What is the total number of telomeres in a rat cell in G2?

Accepted Answer

A) 21 
B) 42 
C) 84 
D) 126 
E) 168 
A) 21 
B) 42 
C) 84 
D) 126 
E) 168

Question 5

Which of the following statements is FALSE?

Accepted Answer

A) Generally, chromosomes of prokaryotes are circular. 
B) Prokaryotes usually have a single molecule of DNA. 
C) Generally, chromosomes of eukaryotes are circular. 
D) Eukaryotes usually have multiple chromosomes. 
E) Eukaryote chromosomes are usually linear. 
A) Generally, chromosomes of prokaryotes are circular. 
B) Prokaryotes usually have a single molecule of DNA. 
C) Generally, chromosomes of eukaryotes are circular. 
D) Eukaryotes usually have multiple chromosomes. 
E) Eukaryote chromosomes are usually linear.

Question 6

In eukaryotes, chromosomes do NOT contain:

Accepted Answer

A) ribosomes. 
B) chromatin. 
C) proteins. 
D) histones. 
E) DNA. 
A) ribosomes. 
B) chromatin. 
C) proteins. 
D) histones. 
E) DNA.

Question 7

The figure shows chromosomal separation taking place.The letters stand for genes; capital and lowercase stand for different alleles.The diploid chromosome number in this organism is four.What process is shown?

Accepted Answer

A) Anaphase of mitosis 
B) Telophase of meiosis I 
C) Anaphase of meiosis I 
D) Telophase of mitosis 
E) Anaphase of meiosis II 
A) Anaphase of mitosis 
B) Telophase of meiosis I 
C) Anaphase of meiosis I 
D) Telophase of mitosis 
E) Anaphase of meiosis II

Question 8

In a higher animal, how many secondary oocytes could be produced from 20 primary oocytes?

Accepted Answer

A) 5 
B) 10 
C) 20 
D) 40 
E) 80 
A) 5 
B) 10 
C) 20 
D) 40 
E) 80

Question 9

Pea plants have seven different pairs of chromosomes.The nucleus of a megaspore in a pea ovary would contain how many chromosomes?

Accepted Answer

A) 3   
B) 7 
C) 14 
D) 21 
E) 30 
A) 3   
B) 7 
C) 14 
D) 21 
E) 30

Question 10

A pollen grain that lands on a stigma grows a pollen tube to deliver _____ (how many?)sperm to the ovary.Fusion of a sperm with an egg produces a _____ n cell, called a _____.

Accepted Answer

A) one; 1; zygote 
B) two; 1; megasporocyte 
C) two; 2; zygote 
D) one; 2; microsporocyte 
E) one; 2; megasporocyte 
A) one; 1; zygote 
B) two; 1; megasporocyte 
C) two; 2; zygote 
D) one; 2; microsporocyte 
E) one; 2; megasporocyte

Question 11

In which stage of the cell cycle does most DNA replication occur in eukaryotes?

Accepted Answer

A) G1 
B) G2 
C) S 
D) Prophase of mitosis 
E) G0 
A) G1 
B) G2 
C) S 
D) Prophase of mitosis 
E) G0

Question 12

Prokaryotic chromosomes do NOT have telomeres because they:

Accepted Answer

A) do not go through mitosis. 
B) do not go through DNA replication. 
C) are in the cytoplasm. 
D) are circular. 
E) have no centromeres. 
A) do not go through mitosis. 
B) do not go through DNA replication. 
C) are in the cytoplasm. 
D) are circular. 
E) have no centromeres.

Question 13

The attachment point on the chromosome for spindle microtubules is the:

Accepted Answer

A) telomere. 
B) centromere. 
C) origin of replication. 
D) sister chromatid. 
E) allele. 
A) telomere. 
B) centromere. 
C) origin of replication. 
D) sister chromatid. 
E) allele.

Question 14

Diploid cells are cells with _____ chromosomes.

Accepted Answer

A) a single set of 
B) circular 
C) two sets of 
D) many sets of 
E) three sets of 
A) a single set of 
B) circular 
C) two sets of 
D) many sets of 
E) three sets of

Question 15

Which of the following occurs during prometaphase?

Accepted Answer

A) The chromosomes align in a single plane. 
B) DNA is replicated. 
C) Microtubules attach to the kinetochores. 
D) Mitotic spindles form. 
E) The two sister chromatids separate. 
A) The chromosomes align in a single plane. 
B) DNA is replicated. 
C) Microtubules attach to the kinetochores. 
D) Mitotic spindles form. 
E) The two sister chromatids separate.

Question 16

During anaphase of mitosis, which of the following occurs?

Accepted Answer

A) Sister chromatids separate from each other. 
B) Homologous chromosomes separate from each other. 
C) The spindle-assembly checkpoint insures that each chromosome is properly aligned. 
D) The condensed chromosomes relax. 
E) Spindle microtubules anchor to kinetochores. 
A) Sister chromatids separate from each other. 
B) Homologous chromosomes separate from each other. 
C) The spindle-assembly checkpoint insures that each chromosome is properly aligned. 
D) The condensed chromosomes relax. 
E) Spindle microtubules anchor to kinetochores.

Question 17

(a)Describe the changing role of cohesin during the mitotic cell cycle.(b)Explain the importance of regulation of cohesin activity to normal cell division.

Accepted Answer

(a)Cohesin keeps sister chromatids toget

Question 18

The normal function of shugoshin during meiosis involves:

Accepted Answer

A) attaching spindle fibers to the kinetochores. 
B) holding homologous chromosomes together until they separate at anaphase I. 
C) keeping cohesin from being broken down in the centromere regions. 
D) holding sister chromatids together until they separate at anaphase I. 
E) allowing crossing over to only occur at specific chromosomal regions. 
A) attaching spindle fibers to the kinetochores. 
B) holding homologous chromosomes together until they separate at anaphase I. 
C) keeping cohesin from being broken down in the centromere regions. 
D) holding sister chromatids together until they separate at anaphase I. 
E) allowing crossing over to only occur at specific chromosomal regions.

Question 19

The process of splitting the cytoplasm, which separates one cell into two, is termed:

Accepted Answer

A) cytokinesis. 
B) mitosis. 
C) anaphase. 
D) diakinesis. 
E) fusion. 
A) cytokinesis. 
B) mitosis. 
C) anaphase. 
D) diakinesis. 
E) fusion.

Question 20

Microscopy to look at a cell's chromosomes is often done when the cell is in mitotic metaphase.For example, karyotypes that extract chromosomes from a single cell and photograph them to look for abnormalities are done on metaphase, rather than interphase, cells.Why?

Accepted Answer

In metaphase, chromo

In a flowering plant, the male part of the flower (the stamen)produces haploid microspores that divide by _____ to produce sperm.

Which of the following pairs are BOTH prokaryotes?

Which of the following statements is FALSE?

A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42).As in humans, sex chromosomes determine sex: XX in females and XY in males.What is the total number of telomeres in a rat cell in G₂?

Which of the following statements is FALSE?

In eukaryotes, chromosomes do NOT contain:

The figure shows chromosomal separation taking place.The letters stand for genes; capital and lowercase stand for different alleles.The diploid chromosome number in this organism is four.What process is shown?

In a higher animal, how many secondary oocytes could be produced from 20 primary oocytes?

Pea plants have seven different pairs of chromosomes.The nucleus of a megaspore in a pea ovary would contain how many chromosomes?

A pollen grain that lands on a stigma grows a pollen tube to deliver ___ (how many?)sperm to the ovary.Fusion of a sperm with an egg produces a _ n cell, called a ___.

In which stage of the cell cycle does most DNA replication occur in eukaryotes?

Prokaryotic chromosomes do NOT have telomeres because they:

The attachment point on the chromosome for spindle microtubules is the:

Diploid cells are cells with _____ chromosomes.

Which of the following occurs during prometaphase?

During anaphase of mitosis, which of the following occurs?

(a)Describe the changing role of cohesin during the mitotic cell cycle.(b)Explain the importance of regulation of cohesin activity to normal cell division.

The normal function of shugoshin during meiosis involves:

The process of splitting the cytoplasm, which separates one cell into two, is termed:

Microscopy to look at a cell's chromosomes is often done when the cell is in mitotic metaphase.For example, karyotypes that extract chromosomes from a single cell and photograph them to look for abnormalities are done on metaphase, rather than interphase, cells.Why?

Introduction to Genetics

Basic Principles of Heredity

Sex Determination and Sex-Linked Characteristics

Linkage, Recombination, and Eukaryotic Gene Mapping

Chromosome Variation

Bacterial and Viral Genetic Systems

DNA- the Chemical Nature of the Gene

DNA Replication and Recombination

From DNA to Proteins- Transcription and Rna Processing

From DNA to Protein- Translation

Control of Gene Expression

Gene Mutations, Transposable Elements, and Dna Repair

Molecular Genetic Analysis and Biotechnology

Genomics and Proteomics

Cancer Genetics

Quantitative Genetics

Population and Evolutionary Genetics

Filters

Exam 2: Chromosomes and Cellular Reproduction

In a flowering plant, the male part of the flower (the stamen)produces haploid microspores that divide by _____ to produce sperm.

Which of the following pairs are BOTH prokaryotes?

Which of the following statements is FALSE?

A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42).As in humans, sex chromosomes determine sex: XX in females and XY in males.What is the total number of telomeres in a rat cell in G2?

Which of the following statements is FALSE?

In eukaryotes, chromosomes do NOT contain:

The figure shows chromosomal separation taking place.The letters stand for genes; capital and lowercase stand for different alleles.The diploid chromosome number in this organism is four.What process is shown?

In a higher animal, how many secondary oocytes could be produced from 20 primary oocytes?

Pea plants have seven different pairs of chromosomes.The nucleus of a megaspore in a pea ovary would contain how many chromosomes?

A pollen grain that lands on a stigma grows a pollen tube to deliver _____ (how many?)sperm to the ovary.Fusion of a sperm with an egg produces a _____ n cell, called a _____.

In which stage of the cell cycle does most DNA replication occur in eukaryotes?

Prokaryotic chromosomes do NOT have telomeres because they:

The attachment point on the chromosome for spindle microtubules is the:

Diploid cells are cells with _____ chromosomes.

Which of the following occurs during prometaphase?

During anaphase of mitosis, which of the following occurs?

(a)Describe the changing role of cohesin during the mitotic cell cycle.(b)Explain the importance of regulation of cohesin activity to normal cell division.

The normal function of shugoshin during meiosis involves:

The process of splitting the cytoplasm, which separates one cell into two, is termed:

Microscopy to look at a cell's chromosomes is often done when the cell is in mitotic metaphase.For example, karyotypes that extract chromosomes from a single cell and photograph them to look for abnormalities are done on metaphase, rather than interphase, cells.Why?

Introduction to Genetics

Basic Principles of Heredity

Sex Determination and Sex-Linked Characteristics

Linkage, Recombination, and Eukaryotic Gene Mapping

Chromosome Variation

Bacterial and Viral Genetic Systems

DNA- the Chemical Nature of the Gene

DNA Replication and Recombination

From DNA to Proteins- Transcription and Rna Processing

From DNA to Protein- Translation

Control of Gene Expression

Gene Mutations, Transposable Elements, and Dna Repair

Molecular Genetic Analysis and Biotechnology

Genomics and Proteomics

Cancer Genetics

Quantitative Genetics

Population and Evolutionary Genetics

Filters

A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42).As in humans, sex chromosomes determine sex: XX in females and XY in males.What is the total number of telomeres in a rat cell in G₂?

A pollen grain that lands on a stigma grows a pollen tube to deliver ___ (how many?)sperm to the ovary.Fusion of a sperm with an egg produces a _ n cell, called a ___.