genetics test studyguide – Flashcards
Unlock all answers in this set
Unlock answersquestion
the study of how traits are (blanked) through the interactions of alleles.
answer
inherited
question
when did the study of genetics start
answer
in the 1850's
question
who was the first scientist to study and record how traits pass from one generation to the next.
answer
Gregor Mendel
question
what was he considered?
answer
The father of genetics
question
Passing traits from parent to offspring is referred to as what.
answer
heredity
question
Mendel studied how traits are inherited through the mixing of genetic materials in what?
answer
pea plants
question
he studied offspring that were given different genetic material for a trait from each parent, called what.
answer
hybrid
question
these offspring expressed different traits that a gene may have, called what.
answer
alleles
question
during his study, he discovered that the(blank) trait on an allele seemed to disappear when the plants were cross-pollinated.
answer
recessive
question
At the same time, some traits seem to cover up other traits and he labeled these as what?
answer
dominant
question
scientist now say when two alleles for a trait are the same, the organism is considered what?
answer
homozygous
question
scientist have designed a grid with letters called what?
answer
punnett square
question
the different ways alleles can combine is referred to as the organisms what?
answer
genotype
question
how a organism looks is called what?
answer
phenotype
question
some organisms are considered what?
answer
pure bred
question
farmers and animal breeders genetically do what to their crops and animals?
answer
cross
question
is it possible for two alleles to produce four phenotypes?
answer
no only three.
question
how is a trait inherited with more than two alleles?
answer
multiple alleles
question
name a sex linked genetic disorder
answer
color blindness
question
name a homozygous recessive disorder
answer
cystic fibrosis
question
Selective breeding is part of the science of
answer
genetics
question
What uses biological and chemical methods to change the DNA sequence of genes?
answer
genetic engineering
question
Genetic engineering can be accomplished in bacteria using
answer
recombinant DNA
question
Gene therapy has shown promise
answer
in controling
question
Many stores_______genetically engineered produce.
answer
label
question
_______ involves placing a normal allele in a cell that has a mutation and hoping that the normal allele begins to function.
answer
Gene therapy
question
Why do some people proffer to eat foods that are not genetically engineered?
answer
Because we don't know the potential long term problems.
question
Identify a disease or disorder and explain how it might be controlled by genetic engineering.
answer
Cancer is a disease that might be controlled by genetic engineering by adding a type of gene into the person that stops the cancer.
