Study Guide Mendelian Genetics

question

What is the scientific study of heredity?
answer

Genetics
question

What is the allele for a recessive trait represented by?
answer

a lower case letter
question

If there is two capital or lower case letters together, what is this pair of alleles called?
answer

homozygous or pure
question

What is the genotype of an organism that has at least one capital letter?
answer

heterozygous or hybrid
question

What is the physical appearance of an individual for a specific trait called?
answer

phenotype
question

When an individual expresses both the dominant and recessive traits at the same time the alleles are said to be?
answer

codominant
question

Who is the \”father\” of genetics?
answer

Gregor Mendel
question

What law states the alleles of a gene separate from each other during the formation of gametes?
answer

Law of Independence Assortment
question

What does the genotype look like for an individual that is heterozygous for tallness?
answer

Tt
question

What type of plants did Mendel study?
answer

pea plants
question

What is the device called that is used to determine the probable outcome of genetic crosses?
answer

punnett square
question

What is wrong with a person who has hemophilia?
answer

There blood doesn’t clot
question

What is a sex-linked trait?
answer

Gametes
question

What does the genotype look like for a person that is homozygous recessive for a trait?
answer

two lower case letters
question

What does the genotype look like for pure-breeding plant?
answer

Both capital or both lower case letters
question

What is a pedigree?
answer

is a chart of genetic history of a family over several generations
question

What does the law of dominance state?
answer

Some alleles are dominant and others are recessive
question

Why did Mendel choose pea plants as the organism to study in his experiments?
answer

-produces lots of offspring -grows quickly -easy to grow
question

Why is it uncommon for a woman to have a sex-linked genetic disorder, such as hemophilia?
answer

because one X hides the other !
question

What’s homozygous?
answer

organisms that have two identical alleles for a particular trait
question

What’s heterozygous?
answer

organisms that have 2 different alleles for the same trait
question

Whats a genotype?
answer

genetic makeup of an organism
question

If males are affected in the pedigree it is?
answer

x-linked
question

If it is 50/50 ratio between men & women the disorder is?
answer

autosomal
question

if the disorder is ___ one of the parents must have the disorder
answer

dominant
question

if the disorder is ___ neither parent has to have the disorder because they can be heterozygous for the trait
answer

recessive

Get instant access to
all materials

Become a Member