Question 1

In a monohybrid cross, how many traits are examined?

Accepted Answer

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

Question 2

Which of the following is mismatched?

Accepted Answer

A)  pollen - male 
B)  stigma - female 
C)  anther - female 
D)  ovule - female 
E)  stamen - male 
A)  pollen - male 
B)  stigma - female 
C)  anther - female 
D)  ovule - female 
E)  stamen - male

Question 3

Unattached earlobes (EE or Ee) are dominant over attached earlobes (ee). A couple both have unattached earlobes but each one has a parent with attached earlobes (ee). Therefore, they correctly assume that they are carriers for attached earlobes (Ee). If the couple proceeds to have four children, then

Accepted Answer

A)  they can be certain that three will be heterozygous and one homozygous recessive. 
B)  if the first three are heterozygous, the fourth must be homozygous recessive. 
C)  the children must repeat the grandparents' genotype (Ee). 
D)  all children must have unattached earlobes since both parents possess the dominant gene for it. 
E)  two heterozygous, one homozygous dominant, and one homozygous recessive is a likely outcome, but all heterozygous, or two, three, or all four homozygous is also possible. 
A)  they can be certain that three will be heterozygous and one homozygous recessive. 
B)  if the first three are heterozygous, the fourth must be homozygous recessive. 
C)  the children must repeat the grandparents' genotype (Ee). 
D)  all children must have unattached earlobes since both parents possess the dominant gene for it. 
E)  two heterozygous, one homozygous dominant, and one homozygous recessive is a likely outcome, but all heterozygous, or two, three, or all four homozygous is also possible.

Question 4

The outcome of a genetic cross involving eye color and body type is predicted to have a 25%: 25%: 25%: 25% ratio. When bred, the organisms produced offspring with the following ratio 45%: 45%: 3%: 3%. These results are most likely due to

Accepted Answer

A)  the two genes in question being linked on the same chromosome. 
B)  a spontaneous mutation within the offspring. 
C)  pure chance. 
D)  an inaccurate prediction for the 25%: 25%: 25%: 25% ratio. 
E)  the two genes being on separate chromosomes. 
A)  the two genes in question being linked on the same chromosome. 
B)  a spontaneous mutation within the offspring. 
C)  pure chance. 
D)  an inaccurate prediction for the 25%: 25%: 25%: 25% ratio. 
E)  the two genes being on separate chromosomes.

Question 5

Linked genes

Accepted Answer

A)  always assort independently. 
B)  undergo crossing-over of sister chromatids at a high rate. 
C)  are found on homologous chromosomes. 
D)  never cross over during prophase I. 
E)  tend to be close together on the same chromosome. 
A)  always assort independently. 
B)  undergo crossing-over of sister chromatids at a high rate. 
C)  are found on homologous chromosomes. 
D)  never cross over during prophase I. 
E)  tend to be close together on the same chromosome.

In a monohybrid cross, how many traits are examined?

Which of the following is mismatched?

The outcome of a genetic cross involving eye color and body type is predicted to have a 25%: 25%: 25%: 25% ratio. When bred, the organisms produced offspring with the following ratio 45%: 45%: 3%: 3%. These results are most likely due to

Linked genes

Biology: the Science of Life

The Chemical Basis of Life

The Organic Molecules of Life

Inside the Cell

The Dynamic Cell

Energy for Life

Energy for Cells

Cellular Reproduction

Meiosis and the Genetic Basis of Sexual Reproduction

Dna Biology

Biotechnology and Genomics

Mutations and Genetic Testing

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

Viruses, Bacteria, and Protists

Plants and Fungi

Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Digestion and Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology and Populations

Communities and Ecosystems

Human Impact on the Biosphere

Filters

Exam 10: Patterns of Inheritance

In a monohybrid cross, how many traits are examined?

Which of the following is mismatched?

The outcome of a genetic cross involving eye color and body type is predicted to have a 25%: 25%: 25%: 25% ratio. When bred, the organisms produced offspring with the following ratio 45%: 45%: 3%: 3%. These results are most likely due to

Linked genes

Biology: the Science of Life

The Chemical Basis of Life

The Organic Molecules of Life

Inside the Cell

The Dynamic Cell

Energy for Life

Energy for Cells

Cellular Reproduction

Meiosis and the Genetic Basis of Sexual Reproduction

Dna Biology

Biotechnology and Genomics

Mutations and Genetic Testing

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

Viruses, Bacteria, and Protists

Plants and Fungi

Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Digestion and Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology and Populations

Communities and Ecosystems

Human Impact on the Biosphere

Filters