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WorksheetsDNA/Genetics Quiz Review
Total questions: 15
Worksheet time: 8mins
What does DNA polymerase do?
unwind DNA helix
check for replication errors
break covalent bonds in DNA molecules
add free nucleotides to template DNA strands
What came up with the rule that A=T and C=G?
Watson
Crick
Chargaff
Franklin
What did Rosalind Franklin do?
did x-ray crystallography experiments on DNA
built 3D models of DNA
stated that A=T and G=C
invented DNA replication
DNA is replicated
conservatively (each DNA has 2 new strands or 2 original strands)
semi-conservatively (each DNA has 1 new strand, 1 original strand)
dispersive (DNA is put together from random pieces of new and original DNA)
semi-dispersive (DNA is put together from random pieces of new and original DNA while one contains a whole piece of new/original)
What is complimentary to the template ATCAGGA?
AGGACTA
ATCAGGA
TAGTCCT
AUCAGGA
Bonds between sugar and phosphate molecules on the "sides" of the DNA helix are held by ______________ bonds while bases are held together by ______________ bonds.
covalent; covalent
hydrogen; covalent
hydrogen; hydrogen
covalent; hydrogen
A nucleotide is a(n) ________________ of DNA.
bond
polymer
monomer
enzyme
The trait of pea plants for their seed color has two versions: yellow or green. These different versions are known as
alleles.
genes.
chromosomes.
traits.
Y is the allele for yellow seed coat in pea plants. y is the allele for green seed coat in pea plants. Yy is the __________________ while yellow is the _____________________.
phenotype; genotype
genotype; phenotype
allele; gene
homozygous; recessive
What is the genotypic ratio given for the cross between two heterozygous parents for a trait?
1:1
3:1
1:2:1
2:0:2
One version of the flower color trait in roses is red. The other version is white. A heterozygous offspring comes out as pink. This type of inheritance is known as
completed dominance.
incomplete dominance.
codominance.
multiple alleles.
In human blood type traits, A and B are _______________________ while A and B are _______________________ over O.
codominant; incompletely dominant
completely dominant; incompletely dominant
incompletely dominant; codominant
codominant; completely dominant
The law of ___________________________ states that while each individual organism is made of two alleles, only one is passed down to the next generation.
combination
segregation
replication
Mendel
If one homozygous dominant parent for a trait (TT) has offspring with a recessive parent (tt), what are the chances of having an offspring with the recessive trait?
0%
25%
50%
100%
A heterozygous parent (Rr) and a recessive parent (rr) cross and have offspring. What are the chances of having a heterozygous offspring?
0%
75%
50%
100%
