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Worksheets5.1 Classical Genetics
Total questions: 15
Worksheet time: 17mins
What does heterozygous mean?
An organism that has the same genes for a trait (TT or tt)
An organism that has different genes for a trait (Tt)
When neither gene is fully dominant; offspring is a mixture of both
the different forms of a trait: for example hair color is brown, blonde, red
What would heterozygous yellow pea plant's genotype would be?
If a heterozygous tall pea plant (tall is dominant to short) is crossed with a short pea plant, what are the possible genotypes of the future offspring?
100% Tt
50% Tt, 50% tt
75%Tt, 25%tt
25%TT, 50%Tt, 25%tt
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
25%
50%
75%
100%
Mendel's law of ____ states that a random assortment of maternally and paternally derived chromosomes in meiosis results in gametes that have different combinations of these genes.
dominance
segregation
independent assortment
particular inheritance
What goes in box 3?
How many generations are shown in this pedigree?
4
1
2
3
What are the different possible forms of a gene called?
Alleles
Gametes
Hybrids
Variables
Which is a segment of DNA that codes for a particular protein that is expressed as a particular trait?
Allele
Codon
Gene
Nucleotide
If a black guinea pig (Bb) were crossed with a white guinea pig (bb), what would be the resulting phenotype ratio?
1:1 black to white (50% black / 50% white)
1:0 black to white (100% black / 0% white)
0:1 black to white (0% black / 100% white)
3:1 black to white (75% black / 25% white)
