Exam 1 Questions

Biology 111 with Bos at Purdue University

About this deck

By: Matt Herrick
Textbook: Biology
Created: 2012-04-23
Size: 30 flashcards
Views: 26

About StudyBlue

STUDYBLUE makes things that make you better at school. Things like online flashcards with photos and audio. Things like personalized quizzes and friendly reminders about when (and what) to study next. Think of it as a digital backpack™: access to all of your study materials online and on your phone. STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.

“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis

Sign up (free) to study this.

Sister chromatids are created during which process?

When DNA is replicated during the S phase

As a scientist, you inject a cell with a FtsZ protein blocking chemical. As a result the cell is unable to complete the cell division process. What type of cell are you working with?

Prokaryotic Cell

During Go, what is the structure and the maximum state of compaction for most of the DNA in a eukaryotic cell?

Compacted into 30nm fibers, one strand of DNA per chromosome.

Which of the following would NOT be used to describe any part of binary fision?

a. bidirrectional

b. origin of replication

c. cell plate

d. septum

e. co-occuring replication and segregation

C. Cell Plate

Mitotic spindle fibers attach to chromosomes with the help of which proteins?

Kinetochore

During which phase of the cell cycle does most of the growth occur?

During which phase of the cell cycle are cohesion proteins actively being degraded?

Anaphase

Which of the following is not one of the three things required for accurate cellular respiration?

a. replication of DNA

b. migration of replicated DNA to opposite ends of the cell

c. disassembly of cytoskeleton and formation of spindle apparatus

d. divisions of cytoplasmic contents

e. all of the above are necessary

C. Disassembly of cytoskeleton and formation of the spindle apparatus

Production of normal G1 cyclins is the signal that stimulates the cell to:

Enter the Go phase of the cell cycle

How are meiosis I & meiosis II different?

No crossing over occurs during meiosis II

Which of the following events takes place during interphase?

a. formation of the cell plate

b. chromosome migration to opposite poles of cell

c. reformation of the nuclear membranes

d. replicatoin of DNA

e. none of the above- all occue during mitosis

D. Replication of DNA

Which process is unique to eukaryotic germ-line cells?

Meiosis

The sites of the physical exchange of DNA between chromatids is known as:

Chiasmata

A cyclin gene that is mutated to become overactive would best be categorized as:

An oncogene

Which of the following are expected to be identical to one another?

a. homo. chromosomes before prophase I of meiosis

b. homo. chromosomes after prophase I of meiosis

c. sister chromatids during any phase of cell division

d. the cells that result from meiosis

e. sister chromatids but only before prophase I of meiosis

C. Sister Chromatids during any phase of cell divison

Mendel's principle of independent assortment is directly dependent on which cellular process?

The random orientation of chromosomes during meiosis

What would have caused Mendel to observe patterns of inheritance that appeared to support a model of blending inheritance, rather than the transmission of alleles causing discrete differences?

Experimentation with traits that were inherited in a polygenic manner

Plant height is a trait inherited in true Mendelian fashion; T=tall, t= short. What is the genotype of a tall pea plant if a test cross with that pea plant yields all tall offspring?

If Mendel based his data on only two traits and the genes influencing those traits were located closely together on the same chromosome, which of his rules would he have been unable to resolve?

The Principle of Independent Assortment

In a typical Mendelian dihybrid cross starting with true breeding individual in the P0 generation, how many phenotypes should be observed in the F1 generation?

One

If conducting an experiment that follows the procedure that Mendel used for his experimentation, what similarity would you expect reguardless of if the trait you study had complete dominance, incomplete dominance, or codominance?

A single phenotype & a single genotype in the F1 generation

Which phenotype is impossible to produce in the litter of pups that result from the mating of two Labrador retrievers whose genotypes are BBEe x BBee?

a. black

b. chocolate

c. yellow

d. b & c

e. a & b

B. Chocolate

In humans, males are the hetergametic sex and Fabry's disease (f) is a recessive sex-linked trait. If a man unaffected by the disease ( XF Y) marries a woman that is a carrier for the disease ( XF Xf), what percentage of their children will suffer from the disease?

50% of male affected; 0% female affected

A true-breeding tall plant and a true breeding short plant are crossed and produce medium sized offspring in the F1. When the F1's are crossed, their offspring are a mixed bunch. What pattern of inheritance best explains these outcomes?

Incomplete Dominance

A pattern of genetic inheritance characterized by a single gene affecting many traits is known as:

Pleiotropy

The principle of segregation predicts that the AaBbcc parent from the above cross should produce gametes with which kind of genotypes?

ABc

What is one of the key enabling features of anonymous genetic markers used in modern mapping & linkage analysis?

They are very common and found in high density throughout the genome

Pedigrees of recessive Mendelian traits show all of the following features except:

a. the appearance of the trait in every generation

b. heterozygote male carriers

c. heterozygote female carriers

d. both males & females affected by the trait

e. consanguineous matings that frequently produce affected offspring

A. The appearance of the trait in every generation

About this deck

By: Matt Herrick
Textbook: Biology
Created: 2012-04-23
Size: 30 flashcards
Views: 26

About StudyBlue

“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis