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WorksheetsHeredity
Total questions: 36
Worksheet time: 12mins
The shown trait of an organism
genotype
phenotype
dominant allele
recessive allele
An allele that always shows when present in the genotype
dominant
recessive
homozygous
heterozygous
The "hidden" allele in a heterozygous genotype.
dominant
recessive
homozygous
capital letter
The gene combination of an organism that determines the shown trait.
genotype
phenotype
homozygous dominant
homozygous recessive
What are the sex cells of an organism that reproduces sexually called?
diploid
body cells
gametes.
cytokinesis
When does crossing over happen?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
When does the cell split into 2 separate cells?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
When do the paired chromosomes (homologs) separate?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
When do the chromatids split apart into individual chromosomes?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
When does the DNA replicate?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
When do the centrioles duplicate?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
If a heterozygous parent is crossed with a homozygous recessive parent, what are the probabilities of producing a homozygous dominant offspring?
0%
25%
50%
75%
100%
Green is dominant to red. If a heterozygous parent is crossed with a homozygous recessive parent, what are the probabilities of producing a red offspring?
0%
25%
50%
75%
100%
Green is dominant to red. If a heterozygous parent is crossed with a homozygous recessive parent, what are the probabilities of producing a green offspring?
0%
25%
50%
75%
100%
Green is dominant to red. If a heterozygous parent (P1) is crossed with a homozygous recessive parent (P2), what is the genotype of P1?
GG
Gg
gg
Gr
If an flowering plant has 32 chromosomes in each leaf cell, how many chromosomes would be in a stem cell?
8 chromosomes
16 chromosomes
32 chromosomes
64 chromosomes
If an flowering plant has 32 chromosomes in each leaf cell, how many chromosomes would be in a gamete cell?
8 chromosomes
16 chromosomes
32 chromosomes
64 chromosomes
Creating unique sex cells is the main purpose of which process?
mitosis
meiosis
cytokinesis
interphase
Who determines the gender of offspring in sexually reproducing organisms?
baby doctor
female parent
male parent
nobody knows the answer to this mystery
After meiosis and cytokinesis are complete, which of the following is TRUE?
2 identical cells will be formed
2 unique cells will be formed
4 unique cells will be formed
8 identical cells will be formed
What is the term for a cell that contains two sets of chromosomes?
haploid
diploid
zygote
gamete
During which phase of meiosis do homologous chromosomes exchange genetic material?
Interphase
Meiosis I
Meiosis II
Cytokinesis
What is the probability of producing a heterozygous offspring when two heterozygous parents are crossed?
0%
75%
25%
50%
100%
What is the genotype of a homozygous dominant parent?
Gg
gg
Gr
GG
Which process results in the formation of gametes with half the number of chromosomes?
cytokinesis
meiosis
interphase
mitosis
What is the term for an organism with two identical alleles for a trait?
heterozygous
homozygous
genotype
phenotype
What is the probability of producing a homozygous recessive offspring when two heterozygous parents are crossed?
75%
50%
100%
25%
0%
Which phase of meiosis results in the separation of sister chromatids?
Meiosis II
Meiosis I
Interphase
Cytokinesis
What is the genotype of a homozygous recessive parent?
GG
Gr
gg
Gg
What part of cell division is this image? Hint: you are starting to see the nuclear membrane again!
Interphase
beginning of Meiosis I
end of Meiosis I
What part of cell division is this?
Hint: nuclear membrane is disappearing
Interphase
Meiosis I
Meiosis 2
Cytokinesis
What part of cell division is this?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
Interphase
Meiosis I
Meiosis 2
Cytokinesis
What part of cell division is this?
Interphase
Meiosis I
Meiosis 2
Cytokinesis
What is the genotype of a homozygous recessive parent?
GG
Gr
gg
Gg
