Genetics And Heredity: Question Preview (ID: 24909)

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Why are fruit flies sometimes chosen as test subjects by scientists studying genetics?
a) They reproduce quickly.
b) They do not have cells.
c) They cause disease.
d) They do not reproduce.

Offspring that are the result of sexual reproduction are
a) sometimes identical to the parents.
b) always identical to the parents.
c) never identical to the parents.
d) never identical to other offspring.

Which of the following organisms reproduce sexually?
a) plants
b) humans
c) both plants and humans
d) neither plants or humans

During which type of reproduction do egg and sperm combine?
a) reproduction of bacteria
b) asexual reproduction of animals
c) asexual reproduction of plants
d) sexual reproduction of animals

How are traits determined?
a) one gene
b) many genes
c) the environment
d) all of the above

Where is genetic information contained in the cells of most organisms?
a) organelle
b) nucleus
c) cell wall
d) mitochondria

Which of the following represents a dominant characteristic?
a) RR, and Rr
b) Rr and rr
c) RR, Rr, and rr
d) Rr and rr

During which type of reproduction do the offspring receive half its genetic material f rom each parent?
a) asexual reproduction
b) sexual reproduction
c) cloning
d) none of the above

During which type of reproduction do offspring receive genetic material from one parent?
a) asexual reproduction
b) sexual reproduction
c) both asexual and sexual reproduction
d) neither asexual or sexual reproduction

Two parents are both carriers for a genetic trait that is based on only one gene. This means that their offspring
a) have a 50% chance of inheriting the trait.
b) cannot have the trait.
c) will all be carriers for the trait.
d) have a 25% chance of inheriting the trait.

If the letter 'c' is used to represent a genetic trait, which of the following would most likely be used to represent the recessive condition?
a) CC
b) cc
c) Cc
d) None of the above

Inherited diseases are used caused by
a) genes.
b) environmental factors
c) virusus
d) all of the above

A worm that is split in two will have each half grows back into a complete worm. This is an example of
a) sexual reproduction
b) asexual reproduction

Which list below describes how the human body is organized from largest to smallest structure?
a) DNA, chromosomes, cells
b) cells, DNA, chromosomes
c) cells, chromosomes, DNA
d) chromosomes, cells, DNA

What would cause an offspring of asexual reproduction to NOT be identical to the parent?
a) a genetic mutation
b) fertilization occured
c) multicellular organisms formed
d) a clone

Which of the following statements is TRUE?
a) Only multicellular organisms can reproduce asexually.
b) Only single-celled organisms can reproduce sexually.
c) Only single-celled organisms can reproduce asexually.
d) none of the above

What are some trade-offs in choosing to be involved in genetic disease testing?
a) It may be hard to get health insurance.
b) You might find out you have the disease.
c) There are no trade-offs with this decision.
d) both a and b

One of the first people to study patterns of heredity scientifically was
a) Gregor Mendel
b) Robert Hooke
c) Mary-Claire King
d) Antoine Marfan

How can every human being be unique?
a) Humans have two parents who give 1/2 their genetic material to the child.
b) The 1/2 of the genetic information that is contributed is random.
c) all the above

Explain how heart disease is a combination of genetics and environment.
a) If you have relatives with heart disease you will develop it also if you don't live a healthy life style.
b) Your life style triggers any genetic mutations in your system.
c) If relatives have heart disease you may be genetically inclined to get it. Eating well and exercising can reduce the risk.
d) If relatives have heart disease you may be genetically inclined to get it. Eating well and exercising will prevent it .

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