8th Grade Science Chapter 2 Review Question Preview (ID: 52496)


Traits And How They Change. TEACHERS: click here for quick copy question ID numbers.

the study of heredity
a) genetics
b) biology
c) life science
d) genes

________ is the result of the death of the last member of a species.
a) evolution
b) natural selection
c) adaptive radiaton
d) extinction

an alternate form of a gene is a
a) mutation
b) genetics
c) allele
d) evolution

any feature of an organism that is inherited.
a) trait
b) allele
c) genes
d) genotype

the visible product of a gene and the environments influences is a
a) genotype
b) phenotype
c) dominant
d) recessive

if a parent has the genotype CcBB, how many different sex cells wil be produced
a) 2
b) 4
c) 1
d) 7

for which did Darwin propose natural selection as an explanation
a) selective breeding
b) evolution
c) predation
d) mutation

any feature of an organism that is inherited is a
a) trait
b) allele
c) gene
d) chromosome

the visible product of a gene and enviromental influences is
a) genotype
b) genetics
c) phenotype
d) mutation

the mechanism of evolution is
a) extinction
b) mutation
c) natural selction
d) evolution

which is not a way that humans influence the rate of species extinction
a) mining
b) farming
c) volcanic eruptions
d) construction

what results in the formation of new alleles
a) mutation
b) dominant
c) genetics
d) recessive

the survival of the fittest
a) evolution
b) extinction
c) natural selection
d) alleles

what is the production of several species from one ancestral species called
a) adaptive radiation
b) heredity
c) extinction
d) phenotype

which would not be evidence of evolution
a) similar structures in two different species
b) variations in a species in two environments
c) a bird that is the same in two different areas of its range
d) a species that can avoid a predator

what is the study of heredity called
a) genetics
b) enviromental
c) by evolution
d) natural selection

which is a sequence of DNA that directs a cell to make protein
a) chromosome
b) gene
c) nucleus
d) recessive

what is a trait called that appears only when both alleles are present
a) dominant
b) recessive
c) genetic
d) alleles

what is the term used for the different forms of a gene
a) phenotypes
b) genotypes
c) genetics
d) alleles

a model used to predict the offspring of known genotypes
a) genetics
b) punnett square
c) mendel
d) darwin

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