Genetics Review Question Preview (ID: 35441)


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What is a physical characteristic that shows up because of your genes
a) genotype
b) phenotype
c) heredity
d) DNA

What is a Punnett Square used for?
a) To guarantee you get the traits you want in your children
b) To show exactly what genotypes your children will have...for sure!
c) To predict the possible genotypes for offpsring of two parents
d) Don't pick me!

What is a physical characteristic called that makes organisms differ from each other?
a) genotype
b) trait
c) gene
d) DNA

What controls your traits?
a) your genes
b) your blood type
c) a punnett square
d) Your hair color

Cross a homozygous red rose (RR) with a homozygous white rose. (rr) What is the probability that you will have a red rose?
a) 25%
b) 50%
c) 75%
d) 100%

How many chromosomes do humans have in their body cells?
a) 23 total
b) 46 total
c) 46 pair
d) 1 set

How many chromosomes are in human sex cells?
a) 1
b) 46
c) 23
d) none

With sexual reproduction, offspring will-
a) be identical to their parents
b) will not have any of the genes of their parents
c) will have a combination of genes from both parents
d) will have the exact same genes as their siblings

With asexual reproduction, offpsring will-
a) be identical to the parent
b) will not have any of the genes of their parent
c) will have a combination of genes from both parents
d) will never be produced

What is is called to have two different alleles for the same trait?
a) Homozygous
b) Heterozygous
c) purebred
d) dominant

What is is called when you have two identical alleles for one trait?
a) homozygous
b) heterozygous
c) hybrid
d) recessive

Which type of allele will always show up when it is present?
a) Recessive
b) gene
c) Dominant
d) weak

How do recessive traits show up?
a) You can have just one and it will show up
b) It has to be paired with a dominant
c) It will only show up if there are two recessives for a trait
d) It always gets hidden no matter what

The passing on of genetic information from one generation to another is-
a) traits
b) genetics
c) DNA
d) heredity

If tall flowers (T) are dominant to short flowers (t)-what is the probability of producing a tall flower if you cross two heterozygous flowers (Tt)?
a) 0%
b) 25%
c) 75%
d) 100%

The actual genetic make up and organism has for a particular trait-
a) gene
b) genotype
c) phenotype
d) DNA

Cross a heterozygous black bunny (Bb) with a homozygous white bunny (bb)? What is the probability of getting a white bunny?
a) 0%
b) 25%
c) 50%
d) 100%

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