NEW
Font size
WorksheetsGenetics
Total questions: 43
Worksheet time: 56mins
A green pea plant (Gg) is crossed with a yellow pea plant (gg). Describe the genotype of the offspring. (Be sure to remember that the capital letter is dominant).
50% heterozygous and 25% homozygous recessive
50% heterozygous and 50% homozygous recessive
100% homozygous recessive
25% heterozygous and 50% homozygous
A tall plant (TT) is crossed with a tall plant (Tt). What is the phenotype of the offspring?
50% homozygous dominant; 50% heterozygous; 100% tall
100% homozygous dominant; 100% tall
25% homozygous dominant; 75% heterozygous; 100% short
50% homozygous dominant; 50% heterozygous; 100% short
A tall plant (Tt) is crossed with a short plant (tt). What is the genotype of the offspring?
25% heterozygous; 75% homozygous
100% homozygous dominant
100% heterozygous
50% heterozygous; 50% homozygous dominant
A tall plant (Tt) is crossed with a short plant (tt). What is the phenotype of the offspring?
75% tall; 25% short
25% tall; 75% short
50% tall; 50% short
100% tall
A homozygous dominant brown mouse (BB) is crossed with a heterozygous brown mouse (tan is the recessive color). List the offspring genotype and phenotype.
50% homozygous dominant; 50% heterozygous and 100% tan
25% homozygous dominant; 75% heterozygous; 100% brown
50% homozygous dominant; 50% heterozygous and 100% brown
75% homozygous dominant; 25% heterozygous and 100% tan
Two heterozygous white (brown fur is recessive) rabbits are crossed. What is their genotype?
25% homozygous domestic; 25% homozygous recessive; 50% heterozygous
50% homozygous dominant; 50% heterozygous
25% homozygous domestic; 75% homozygous recessive
Two heterozygous white(brown fur is recessive) rabbits are crossed. What is the phenotype of the offspring?
75% white; 25% brown
25% white; 75 % brown
Two heterozygous red flowers (white flowers are recessive) are crossed. What is the genotype of the offspring?
75% homozygous dominant; 25% heterozygous
50% homozygous dominant; 50% heterozygous
25% homozygous dominant; 25% homozygous recessive; 50% heterozygous
Two heterozygous red flowers (white flowers are recessive) are crossed. What is the phenotype of the offspring?
50% red; 50% white
75% white; 25% red
25% red; 25% pink; 50% white
75% red; 25% white
A homozygous tall plant (TT) is crossed with a heterozygous tall plant (Tt) (short is the recessive phenotype). What are the genotypes and phenotypes of the offspring?
100% homozygous dominant; 100% tall
50% homozygous dominant; 50% heterozygous and 100% tall
25% heterozygous; 75% homozygous dominant and 100% tall
The study of ____________ is called genetics
heredity
dominance
pea plants
mutations
Gregor Mendel studied heredity using _______ plants
rose
pea
berry
corn
If you cross a white flower (pp) with a purple flower (PP), the possible genotypes of the offspring are
PP and pp
All Pp
All PP
All pp
If you crossed a PP (purple) with a pp (white), what would the phenotypes be?
all white
all tall
all purple
1/2 white, 1/2 purple
The organism's appearance is known as its
heredity
pedigree
phenotype
genotype
If you cross two rabbits that have the genotype Bb, how many possible genotypes can be found in the offspring?
one
two
three
four
_____________ describes a trait that covers over, or masks another form of that trait.
recessive
gene
allele
dominant
_________________ describes a trait that is covered over, or masked by another form of that trait.
dominant
punnett
recessive
gene
Different forms of a gene are called
alleles
traits
Two of the same alleles of the gene for a certain trait
heterozygous
homozygous
Two different alleles of the gen for a certain trait
homozygous
heterozygous
(E= 3 eyes, e= 1 eye)
When you cross two parents, each parent is responsible for passing _______ of their two alleles for each individual trait.
1
2
3
4
Grey (G) fur is dominant to brown (g) fur in mice. What would be the genotype of a mouse that is heterozygous?
GG
Gg
gg
GGG
What is AA
Homozygous Dominant
Heterozygous
Homozygous Recessive
Heterozygous dominant
This type of inheritance pattern shows BOTH traits in possible offspring
complete dominance
incomplete dominance
co-dominance
shared traits
A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?
0%
25%
50%
100%
