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WorksheetsMendelian and Non-Mendelian Genetics Review
Total questions: 25
Worksheet time: 14mins
True or False
A hybrid is
The off spring of crosses of parents with different traits.
True
False
When George Mendel crossed a tall plant with a short plant, what was the F1 plants genotypes?
TT
Tt
tt
What does the principle of dominance state?
defined that the individual has two alleles for each particular characteristic, and during the development of gametes, these alleles become segregated. In other words, there is one allele in each gamete.
That the alleles of two (or more) different genes get sorted into gametes independently of one another. In other words, the allele a gamete receives for one gene does not influence the allele received for another gene.
Alleles are either dominant or recessive
A tall plant is mixed with a short plant. If the F1 pea plants are allowed to self pollinate, what will be the genotypes and phenotypes?
25% Short 75% Tall
25% tt 75%Tt
25% Short 75% Tall
25% tt 25%TT 50%Tt
50% Tall 50% Short
50% Tt 50% tt
100% Tall
100% Tt
Organisms that have 2 identical alleles for a trait are said to be:
Somatic
Heterozygous
Sexual
Homozygous (Purebred)
In the cross of Tt to TT, what are the genotypes and phenotypes of the offspring?
100% Tall
100% Tt
50% Tall 50% Short
50% TT 50% tt
50% Tall 50% Short
50% Tt 50% tt
100% Short
100% tt
If you made a punnett square showing Gregor Mendel's cross between true-breeding tall plants and short plants , the square would show which genotype?
TT- 50%
tt- 50%
Tt- 50%
tt- 25%
TT- 25%
Tt- 50%
tt- 50%
Tt- 100%
No gene is completely dominant
Incomplete dominance
Law of segregration
Codominance
What's a phenotype?
Physical trait
Genes
Passing of traits is called?
Offspring
Genes
Passing on traits
Heredity
Mendel's finding that the inheritance of one trait had no effect onther inheritance of another became known as-
Principle of Dominance
Law of Independent Assortment
Law of Segregation
What is the expected genotypic ratio from a homo dominant + hetero monohybrid cross?
2:1:2
2:2:0
1:2:1
4:0
The plants mendel used to produce the F1 generation are called?
(a)
The diff forms of a gene is called?
Trait
Allele
DNA
Why are dominant traits shown?
The law of dominance states traits are either dominant or recessive.
Because they're dominant
Since the letters are capital
What happens when alleles segregate from each other?
Answer ---->
They segregate independently of each other to allow various combinnations (genetic variation)
Define incomplete dominance
Only one trait is shown
Where both traits are shown
Where no trait takes complete dominance, which results in a new phenotype
Define codominance
Only one trait is shown
Where both traits are shown
Where no trait takes complete dominance, which results in a new phenotype
What are some traits that is determined by multiple alleles?
Hair
Blood Type
Fur color
Your voice
Do sex link show up in males or females more?
(Fill either: Male or Female)
(a)
Which chromosome is the sex linked trait located?
X
Y
If a couple has a boy, what's the probability of them having another?
100%
50%
75%
25%
Which is true?
XX - Male
XY- Female
XX - Female
XY - Male
Probability of having a boy/girl?
50% for each
100% For girls
75% girls
25% boys
75% boys
25% girls
In humans which chromosome determines the sex of the offsrping?
Female
Male
