Question 1

If a nondisjunction occurs during meiosis I,

Accepted Answer

A)  none of the four resulting cells will be aneuploid. 
B)  one of the four resulting cells will be aneuploid. 
C)  two of the four resulting cells will be aneuploid. 
D)  three of the four resulting cells will be aneuploid. 
E)  all four resulting cells will be aneuploid. 
A)  none of the four resulting cells will be aneuploid. 
B)  one of the four resulting cells will be aneuploid. 
C)  two of the four resulting cells will be aneuploid. 
D)  three of the four resulting cells will be aneuploid. 
E)  all four resulting cells will be aneuploid.

Question 2

You are trying to breed a crop that has a sweeter fruit and are working on one particular gene.In repeated trials,when you cross a very sweet variety with a slightly sweet variety,you consistently get medium-sweet fruit.What is happening?

Accepted Answer

This is an example of incomplete dominan

Question 3

If we drew a graph for a trait exhibiting polygenic inheritance,the graph would be

Accepted Answer

A)  a straight line. 
B)  a bell curve. 
C)  J-shaped. 
D)  S-shaped. 
E)  U-shaped. 
A)  a straight line. 
B)  a bell curve. 
C)  J-shaped. 
D)  S-shaped. 
E)  U-shaped.

Question 4

Imagine you cross a red flower with a white flower.What will the offspring look like if red and white are incompletely dominant to each other? What will the offspring look like if red and white are codominant?

Accepted Answer

If red and white are incomplet

Question 5

All of the following are TRUE of the Y chromosome,EXCEPT

Accepted Answer

A)  it can be used to trace male lineage. 
B)  it undergoes recombination with the X chromosome. 
C)  it is tiny and carries only a few genes. 
D)  it contains genes that influence the development of male characteristics. 
E)  it is passed only from father to son. 
A)  it can be used to trace male lineage. 
B)  it undergoes recombination with the X chromosome. 
C)  it is tiny and carries only a few genes. 
D)  it contains genes that influence the development of male characteristics. 
E)  it is passed only from father to son.

Question 6

You have a white flower and you know it is homozygous for the flower color gene,and you have a red flower that is also homozygous for flower color.When you cross these,100% of the offspring are pink.Now,you cross these pink offspring.What percentage of their progeny will be pink? Explain this,using a Punnett square.

Accepted Answer

This is an example of incomple

Question 7

Which of the following human chromosomes usually does NOT exchange DNA during meiosis?

Accepted Answer

A)  X chromosome 
B)  Y chromosome 
C)  chromosome 1 
D)  chromosome 12 
E)  chromosome 17 
A)  X chromosome 
B)  Y chromosome 
C)  chromosome 1 
D)  chromosome 12 
E)  chromosome 17

Question 8

Which of the following types of inheritance can be directly affected by the environment?

Accepted Answer

A)  polygenic 
B)  incomplete dominance 
C)  complete dominance 
D)  multifactorial 
E)  recessive inheritance 
A)  polygenic 
B)  incomplete dominance 
C)  complete dominance 
D)  multifactorial 
E)  recessive inheritance

Question 9

Which two people would have the most different Y chromosomes?

Accepted Answer

A)  a father and his biological son 
B)  a boy and his biological father's father 
C)  a boy and his father's paternal grandfather 
D)  a father and his daughter's biological son 
E)  two fraternal twin brothers 
A)  a father and his biological son 
B)  a boy and his biological father's father 
C)  a boy and his father's paternal grandfather 
D)  a father and his daughter's biological son 
E)  two fraternal twin brothers

Question 10

The universal donor blood group MOST in demand during catastrophic times is

Accepted Answer

A)  type A, Rh negative. 
B)  type O, Rh positive. 
C)  type AB blood, Rh negative. 
D)  type O, Rh negative. 
E)  type AB, Rh positive. 
A)  type A, Rh negative. 
B)  type O, Rh positive. 
C)  type AB blood, Rh negative. 
D)  type O, Rh negative. 
E)  type AB, Rh positive.

Question 11

Hydrangea plants have a gene that codes for having flower color or having no flower color.For those plants that do have flower color,the exact color depends on the amount of aluminum in the plant: they are pink or red when little aluminum is present and blue when aluminum is present.Plants take up more aluminum in acidic soils,so a plant with red flowers can be turned into a plant with blue flowers by lowering the pH of the soil.This is an example of ______ inheritance.

Accepted Answer

A)  polygenic 
B)  multifactorial 
C)  recessive 
D)  codominant 
E)  dominant 
A)  polygenic 
B)  multifactorial 
C)  recessive 
D)  codominant 
E)  dominant

Question 12

Thomas Jefferson is thought to have fathered the youngest son of slave Sally Hemings.This idea was investigated using Y chromosome analysis of

Accepted Answer

A)  Sally Hemings's oldest son. 
B)  Jefferson's daughter. 
C)  Jefferson's only direct son. 
D)  Jefferson's paternal uncle. 
E)  Jefferson's brother. 
A)  Sally Hemings's oldest son. 
B)  Jefferson's daughter. 
C)  Jefferson's only direct son. 
D)  Jefferson's paternal uncle. 
E)  Jefferson's brother.

Question 13

Explain why Y chromosomes have no exchange of DNA during meiosis.Describe any relevant events that occur during meiosis,as part of your explanation.

Accepted Answer

During meiosis,homologous chromosomes pa

Question 14

Blood type (blood group plus the Rh factor)is an example of two types of inheritance patterns.These patterns are

Accepted Answer

A)  codominance and incomplete dominance. 
B)  codominance and classic dominant/recessive inheritance. 
C)  incomplete dominance and classic dominant/recessive inheritance. 
D)  polygenic inheritance and incomplete dominance. 
E)  polygenic inheritance and classic dominant/recessive inheritance. 
A)  codominance and incomplete dominance. 
B)  codominance and classic dominant/recessive inheritance. 
C)  incomplete dominance and classic dominant/recessive inheritance. 
D)  polygenic inheritance and incomplete dominance. 
E)  polygenic inheritance and classic dominant/recessive inheritance.

Question 15

Skin color is controlled by six separate genes,making the inheritance of skin color a good example of

Accepted Answer

A)  codominance. 
B)  incomplete dominance. 
C)  multiple-allele inheritance. 
D)  multifactorial inheritance. 
E)  polygenic inheritance. 
A)  codominance. 
B)  incomplete dominance. 
C)  multiple-allele inheritance. 
D)  multifactorial inheritance. 
E)  polygenic inheritance.

Question 16

"If you have a genetic predisposition to a disease,such as cancer,you will eventually get it." Is that a true statement?

Accepted Answer

A)  Yes, eventually you will get the disease. 
B)  It is not necessarily true; it may be dependent on the environment. 
C)  Yes it is true, especially if the disease is multifactorial. 
D)  Yes, if one of your parents had the disease, you will have it. 
E)  None of the above. 
A)  Yes, eventually you will get the disease. 
B)  It is not necessarily true; it may be dependent on the environment. 
C)  Yes it is true, especially if the disease is multifactorial. 
D)  Yes, if one of your parents had the disease, you will have it. 
E)  None of the above.

Question 17

Which of the following is TRUE of the sex chromosomes?

Accepted Answer

A)  The X chromosome never undergoes recombination. 
B)  The Y chromosome never undergoes recombination. 
C)  Neither the X nor the Y undergo recombination. 
D)  During meiosis, the X and the Y exchange genes by crossing over. 
E)  During meiosis, only part of the X exchanges genes with the Y by crossing over. 
A)  The X chromosome never undergoes recombination. 
B)  The Y chromosome never undergoes recombination. 
C)  Neither the X nor the Y undergo recombination. 
D)  During meiosis, the X and the Y exchange genes by crossing over. 
E)  During meiosis, only part of the X exchanges genes with the Y by crossing over.

Question 18

If you have type A negative blood,you can donate blood to people with all the following blood types,EXCEPT

Accepted Answer

A)  A negative. 
B)  A positive. 
C)  AB negative. 
D)  AB positive. 
E)  O negative. 
A)  A negative. 
B)  A positive. 
C)  AB negative. 
D)  AB positive. 
E)  O negative.

Question 19

Explain three ways a child may become intersex.

Accepted Answer

One way is from having a chromosomal mak

Question 20

Hair texture is an example of incomplete dominance.A person who is homozygous dominant HH has curly hair and they mate with a person who has straight hair (homozygous recessive hh).What percentage of their offspring will have curly hair? (Draw a Punnett square to help you figure this out.)

Accepted Answer

A)  0% 
B)  25% 
C)  50% 
D)  75% 
E)  100% 
A)  0% 
B)  25% 
C)  50% 
D)  75% 
E)  100%

Exam 12: Complex Inheritance Qa: Genetics

If a nondisjunction occurs during meiosis I,

You are trying to breed a crop that has a sweeter fruit and are working on one particular gene.In repeated trials,when you cross a very sweet variety with a slightly sweet variety,you consistently get medium-sweet fruit.What is happening?

If we drew a graph for a trait exhibiting polygenic inheritance,the graph would be

Imagine you cross a red flower with a white flower.What will the offspring look like if red and white are incompletely dominant to each other? What will the offspring look like if red and white are codominant?

All of the following are TRUE of the Y chromosome,EXCEPT

Which of the following human chromosomes usually does NOT exchange DNA during meiosis?

Which of the following types of inheritance can be directly affected by the environment?

Which two people would have the most different Y chromosomes?

The universal donor blood group MOST in demand during catastrophic times is

Thomas Jefferson is thought to have fathered the youngest son of slave Sally Hemings.This idea was investigated using Y chromosome analysis of

Explain why Y chromosomes have no exchange of DNA during meiosis.Describe any relevant events that occur during meiosis,as part of your explanation.

Blood type (blood group plus the Rh factor)is an example of two types of inheritance patterns.These patterns are

Skin color is controlled by six separate genes,making the inheritance of skin color a good example of

"If you have a genetic predisposition to a disease,such as cancer,you will eventually get it." Is that a true statement?

Which of the following is TRUE of the sex chromosomes?

If you have type A negative blood,you can donate blood to people with all the following blood types,EXCEPT

Explain three ways a child may become intersex.

Hair texture is an example of incomplete dominance.A person who is homozygous dominant HH has curly hair and they mate with a person who has straight hair (homozygous recessive hh).What percentage of their offspring will have curly hair? (Draw a Punnett square to help you figure this out.)

The Process of Science Java Report

Chemistry and Molecules of Life Mission to Mars

Cell Function and Structure Wonder Drug

Nutrition,metabolism,enzymes the Peanut Butter Project

Energy Flow and Photosynthesis the Future of Fuel

Dietary Energy and Cellular Respiration Supersize Me

DNA Structure and Replication Biologically Unique

Genes to Proteins Medicine From Milk

Cell Division and Mitosis Natures Pharmacy

Mutations and Cancer Fighting Fate

Single-Gene Inheritance and Meiosis Rock for a Cause

Stem Cells and Cell Differentiation Grow Your Own

Natural Selection and Adaptation Bugs That Resist Drugs

A: Nonadaptive Evolution and Speciation Urban Evolution

B: Nonadaptive Evolution and Speciation Urban Evolution

Evidence for Evolution a Fish With Fingers

Life on Earth Qa: Evolution

Prokaryotic Diversity Lost City

A: Eukaryotic Diversity Rain Forest Riches

B: Eukaryotic Diversity Rain Forest Riches

Human Evolution Skin Deep

A: Population Ecology on the Tracks of Wolves and Moose

B: Population Ecology on the Tracks of Wolves and Moose

A: Community Ecology Whats Happening to Honey Bees

B: Community Ecology Whats Happening to Honey Bees

A: Ecosystem Ecology the Heat Is on

B: Ecosystem Ecology the Heat Is on

A: Sustainability the Makings of a Green City

B: Sustainability the Makings of a Green City

A: Overview of Physiology Man Versus Mountain

B: Overview of Physiology Man Versus Mountain

Digestive System Drastic Measures

A: Cardiovascular System Death in Bogalusa

B: Cardiovascular System Death in Bogalusa

Respiratory System Peak Performance

A: Central Nervous System Smoke on the Brain

B: Central Nervous System Smoke on the Brain

Reproductive System Too Many Multiples

Immune System Viral Mysteries

A: Plant Physiology

B: Plant Physiology

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