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Exam 3: Mendelian Inheritance

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Question 1

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Choose all statements that constitute key tenets of the chromosome theory of inheritance.

A) Chromosomes are copies of the genetic material that are used to make proteins and are then destroyed.
B) Chromosomes contain the genetic material.
C) Chromosomes are contributed by the maternal parent only.
D) Chromosomes are replicated and transmitted during inheritance and during development.
E) Most cells are diploid, with two copies of each chromosome.
F) Gametes contain two copies of each chromosome so there is a backup copy if one is damaged.
G) During gamete formation, chromosomes segregate independently.
H) Each parent contributes one complete set of chromosomes.
I) Certain chromosomes are linked together, so that genes that work together are transmitted together.

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Question 2

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Mendel's data and the study of chromosomes and meiosis did not support the idea of ________,which is the belief that seeds are produced by all parts of the body and transmitted to the next generation.

A) the chromosome theory of inheritance
B) pangenesis
C) the blending theory of inheritance
D) the law of segregation
E) the law of independent assortment

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Question 3

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When Mendel crossed two plants that were heterozygous for a single trait,what was the phenotypic ratio of their offspring?

In a certain family pedigree,you observe that 7 of a couple's 12 children display a disease trait.In the subsequent generation,some of the children of affected individuals have the disease,but none of the children of two unaffected parents do.You conclude that the disease is caused by a ________ allele.

The ________ refers to the genetic composition of an individual.

If a Punnett square is used to visualize a three-factor cross,how many boxes would be inside of the square?

The observable characteristics of an organism are called its ________.

Differences in plant characteristics such as flower color or height are called variants or traits.

If two individuals with different distinct characteristics are mated,their offspring is called a ________.

Mendel's data from single-factor crosses did not support a blending mechanism of inheritance.Which of the following is correct regarding the blending theory of inheritance?

What theory did Mendel's work with monohybrid crosses support?

An individual who has two different alleles for a trait is called ________.

A true-breeding line of green pod pea plants is crossed with a true-breeding line of yellow pod plants.All of their offspring have green pods.From this information,it can be stated that the green color is ________ to the yellow color.

Which of the following characteristics made the pea plant Pisum sativum an ideal organism for Mendel's studies?

Mendel's work on inheritance had an immediate influence on the scientific community and theories of inheritance.

Which of the following would be used to determine the probability of three independent events in order?

Mendel's work was rediscovered in 1900 by which of the following individual(s) ?

Recall that in pea plants,purple flower color is dominant and white is recessive.If two heterozygous plants are crossed,what is the probability that the first two offspring will have purple flowers?

A specific version of a gene is called a(n) ________.

The chi square test is used to prove that a hypothesis is correct.