Life Science Ch. 7 Review

Splitting frog or pig zygotes is a step in _____.

Because of medical advances, humans live much longer than they did in the time of Abraham and the other patriarchs.

Somatic mutations _____.

A chromosomal change causes a cell to make new proteins.

Which of these is a gene mutation?

Mutations occur as random changes in the genetic makeup of an organism.

Chromosomal changes that involve only the arrangement of genes on a chromosome have little effect on an organism.

Chromosomal changes sometimes _____.

Are human fraternal twins clones?

A gene mutation may result in an incorrect protein being produced.

Ploidy mutations involve the number of sets of chromosomes.

The mating of an organism with its close relatives or, for some plants, with itself is known as _____.

A germ mutation may not affect the organism that has it, but it could affect the organism’s offspring.

John and Mary are 12-year-old twins. What kind of twins are they?

Inherited disorders are always caused by recessive alleles.

A clone is a _____.

Clones are produced by _____.

To develop a new breed of dog, a breeder selects dogs from different breeds with characteristics he wants. This is ____.

A male with Klinefelter syndrome has three sex chromosomes—XXY. This is an example of _____.

An organism that has two complete sets of chromosomes is _____.

Stem cells are cells that _____.

The Human Genome Project is a scientific effort to _____.

Mutations that occur in gametes or gamete-forming cells are called _____ mutations.

Genetic engineering _____.

Some people are carriers of dominant disorders but do not have the disorder themselves.

The use of genetic engineering to correct defective genes responsible for certain diseases is called _____.

Natural human clones are called _____.

The changes we see taking place on the earth are examples of degeneration, not evolution.

Which of the following does not belong with the other three?

Which of these cells is most likely to already be differentiated?

Mutations are rare, and most are _____.

Man has used genetic principles for thousands of years without understanding how they work.

The process of producing human clones to provide cells for the treatment of disease is called _____ cloning.

A lethal mutation is one that _____.

What type of mutation does not affect the offspring?

Fraternal twins _____.

Christians should reject genetic engineering on humans because the Bible forbids it.

Clones are more common in the plant kingdom than in the animal kingdom.

Since the fall of mankind, creation has _____.

Choosing organisms with desirable traits and breeding it so that their offspring will have the same traits is called __.

A gene mutation results from a change in the order of bases in a segment of DNA.

Organisms have generally improved since Creation.

Any change in an organism’s genetic material is _____.

Most gene mutations are dominant.

Seedless watermelons are an example of a change in _____.

Some mutations produce no noticeable effect in an organism.

Which of these disorders is caused by a sex-linked gene mutation?

A mutation is a change in an organism’s physical characteristics that is not caused by a change in its genetic makeup.

Most organisms have chromosomes in sets of two.

Mutations can happen at any time.