WorksheetsIntroduction to Genetics
Total questions: 20
Worksheet time: 20mins
The principle of dominance states that
all alleles are dominant
all alleles are recessive
some alleles are dominant and some are recessive
alleles are neither dominant or recessive
When Gregor Mendel crossed true-breeding tall plants (TT) with true-breeding short plants (tt), all the offspring were tall because
the allele for tall plants is recessive
the allele for short plants is dominant
the allele for tall plants is dominant
If a pea plant has a recessive allele for green peas, it will produce
green peas if it also has a dominant allele for yellow peas
both green peas and yellow peas if it has a dominant allele for yellow
green peas if it does not also have a dominant allele for yellow peas
A heterozygous tall pea plant is crossed with a short plant. The probability that the F1 plant (the offspring) will be tall is
25%
50%
75%
100%
What principle states that during gamete formation genes for different traits separate without influencing each other's inheritance?
Principle of dominance
Principle of independent assortment
Principle of uniformity
Principle of segregation
My mom has dimples (dominant) and my dad does not (recessive). I have dimples, but my sister does not. How can this happen?
I got all my genes from my mom.
My sister got all her genes from my dad.
My sister got both of her chromosomes from my dad.
My sister and I got a different combination of alleles our dad and mom
What do these letters mean to a scientist: Aa?
Homozygous dominant
Homozygous recessive
Two dominant alleles
One dominant allele & one recessive allele
What is a phenotype?
observable (physical) trait
genetic makeup
allele combination
section of DNA that codes for proteins
Whose experiment on mouse concluded as "Genetic Material is transformed from one cell to another"
Mendel
Avery
Rosalind Franklin
Griffith
If the frequency of a change is above 1%, then this change is called as ....
Variation
Allelic transformation
Polymorphism
Mutation
I-Nucleosome, II-Chromosome, III-Selenoid Structure, IV-Chromatin Put them in order from lower to higher in cace of DNA packaging.
I-II-III-IV
IV-I-III-II
I-III-IV-II
II-IV-III-I
In Hersey&Chase experiment,the bacteriophage inflammation was observed.They used radioactivity labelled sulphur and phosphate.Because;
I-DNA includes sulphur within its nucleotides
II-Proteins include phosphate within their aminoacids
III-DNA includes phosphate within its nucleotides
IV-Proteins include sulphur within their aminoacids
Which of them are true?
I-II
III-IV
I-IV
II-III
Which are true for the structure of a nucleosome?
I-The height of a nucleosome is 5.5 nm.
II-The radius of the nucleosome is 11 nm.
III-It is made up of both DNA and H1,H2,H3A and H4B histones.
IV-The surrounding DNA has a 147 nucleotides in length.
Only II
I-II-III
I-II-III-IV
I-II-IV
Which of the statements are true in case of the structure of the nucleic acids?
I-The nitrogenous base is bound to 1' carbon atom of pentose(5-carbon sugar).
II-If the 3' carbon atom of pentose has -OH group then it is RNA.
III-If the 3' carbon atom of pentose lacks -OH group then it is DNA.
IV-Phosphate group is bound to free hanging methyl group of pentose.
I-IV
II-III
I-II-III
Only IV
In case of DNA molecule;
I- Adenine Number is equal to Thymine Number.
II-Cytosine Number is equal to Guanine Number.
III-The nitrogenous bases face outwards on the strands.
IV-Adenine + Guanine = Cytosine + Thymine
I-II-III
I-II
I-II-III-IV
I-II-IV
