7th-8th Grade Ch. 6-7 Review, Part 2 Question Preview (ID: 33820)


Chapter 6-7 Review On Cell Division And Genetics. TEACHERS: click here for quick copy question ID numbers.

If a purebred brown hamster mates with a purebred white hamster and all of the offspring in the first offspring generation are brown, which statement is true of the brown and white traits?
a) White is dominant, and brown is recessive.
b) Brown in dominant, and white is recessive.
c) These traits are examples of incomplete dominance.
d) Not enough information is given to decide.

According to Mendel, how many factors are there for each inherited trait?
a) three
b) two
c) one
d) one-half

In genetics, a cross is
a) the shape of certain chromosomes.
b) one of the two alternative factors.
c) a recessive trait.
d) a test to see how traits are inherited.

Suppose that in cats brown eyes are dominant and blue eyes are recessive. If a purebred brown-eyed cat mates with a purebred blue-eyed cat and one kitten is produced, one would expect the kitten to have
a) either brown or blue eyes.
b) one brown eye and one blue eye.
c) blue eyes.
d) brown eyes.

The genes for sex-linked characteristics are usually carried on
a) the Y chromosome
b) the X chromosome
c) both the X and the Y chromosome
d) neither the X nor the Y chromosome

If a TT plant is crossed with a tt plant, what will the offspring be?
a) all TT
b) all tt
c) all Tt
d) some Tt and some tt

Suppose that in dogs long hair is dominant and short hair is recessive. If a hybrid long-haired dog mates with a purebred short-haired dog and twelve puppies are produced, one would expect
a) exactly six of the puppies to have long hair.
b) approximately half of the puppies to have long hair.
c) all of the puppies to have short hair.
d) all of the puppies to have long hair.

True or False: Human genetic inheritance does not follow the same genetic rules as inheritance in other organisms.
a) True
b) False
c) Happy
d) Thanksgiving

True or False: Mendel was a Catholic monk.
a) True.
b) False.
c) Happy.
d) Thanksgiving.

True or False: The chromosome number is the number of genes on a particular chromosome.
a) True
b) False
c) Happy
d) Thanksgiving

True or False: The chromosome number of an organism is not related to its size.
a) True
b) False
c) Happy
d) Thanksgiving

True or False: Skin color, height, and intelligence are each believed to be controlled by single gene inheritance.
a) True
b) False
c) Happy
d) Thanksgiving

Red-green colorblindness is a ____________ trait.
a) environmentally-linked
b) sex-linked
c) purebred-linked
d) dominant-linked

The way a plant or animal looks (its physical characteristics) is called it _____________.
a) phenotype
b) genotype
c) heliotype
d) cardiotype

What is the normal chromosome number for humans?
a) 12
b) 23
c) 24
d) 46

A ________ is an organism that has different factors for a particular trait.
a) purebred
b) dominant
c) recessive
d) hybrid

After Mendel published his theories, they were
a) immediately disproved.
b) never examined again.
c) ignored for thirty-five tears.
d) immediately related to other theories.

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