Genetics Question Preview (ID: 25109)
Basic Genetics.
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The physical appearance of an organism is its?
a) phenotype
b) homozygous
c) genotype
d) apperance
A number that describes how likely it is that an event will occur is the _______________________ of the event?
a) likelyhood
b) probability
c) stability
d) occurance
An organism that is _____________________ has two identical alleles for a trait.
a) heterozygous
b) similar
c) different
d) homozygous
A Punnett square shows the combination of ________________________ that parents can pass on to offspring.
a) alleles
b) letters
c) phenotype
d) genotype
The genetic makeup of an organism is its?
a) heterozygous
b) trait
c) genotype
d) phenotype
Which of these genotypes is heterozygous?
a) AA
b) Bb
c) cc
d) AAA
Which of these is not a phenotype?
a) tall
b) short
c) homozygous
d) round
On a separate sheet of paper show a cross between individuals that are Aa x Aa, how many boxes of the Punnett square will show an offspring that is AA?
a) 1
b) 2
c) 3
d) 4
What is the scientific study of Heredity?
a) Biology
b) Genetics
c) Chemistry
d) Heredity
A trait that always shows up in the organism when the allele is present.
a) homozygous
b) dominant
c) heterzygous
d) recessive
A trait that is hidden or masked when another allele is present.
a) recessive
b) heterozygous
c) homozygous
d) dominant
What is made up of many genes joined together carrying hereditary information.
a) genes
b) alleles
c) chromosomes
d) jeans
What is a specific characteristic, such as height or color.
a) gene
b) chromosomes
c) recessive
d) trait
On a separate sheet of paper show a cross between individuals that are pp x PP, how many boxes of the Punnett square will show an offspring that is pp?
a) none
b) 1
c) 2
d) 3
On a separate sheet of paper show a cross between individuals that are Ff x FF, how many boxes of the Punnett square will show an offspring that is Ff?
a) none
b) 1
c) 2
d) 3
On a separate sheet of paper show a cross between individuals that are Gg x Gg, what is the probability of getting an offspring that has a heterozygous genotype?
a) 25%
b) 50%
c) 75%
d) 100%
On a separate sheet of paper show a cross between individuals that are Qq x qq , what is the probability of getting an offspring that is homozygous?
a) 100%
b) 0%
c) 25%
d) 50%
On a separate sheet of paper show a cross between individuals that are Yy x Yy, what is the probability that an offspring will be totally recessive?
a) 0%
b) 100%
c) 25%
d) 75%
In humans, brown hair is dominant to blonde hair. Complete a Punnett square to show the genotypes expected for the following cross: heterozygous brown x homozygous blonde. What is the probability of getting an offspring that is homozygous brown?
a) 25%
b) 0%
c) 50%
d) 100%
On a separate sheet of paper show a cross between individuals that are Hh x HH , how many boxes of the Punnett square will show an offspring that is HH?
a) 1
b) 2
c) 3
d) 4
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