Heredity Review
Important People – What are they known for?
1. Gregor Mendel 2. Reginald Punnett –
Identify the following as Asexual or Sexual Reproduction:
3. Uniform
10. Unique
4. Same
11. Clone
5. Bacteria
12. Humans
6. Binary Fission
13. Butterfly
7. Different
14. Variety
8. Ivy vine
15. Yeast
9. Vegetative Propagation
16. 1 parent
24.
17. Dogs
18. Regeneration
19. 2 parents
20. Diverse
21. Identical
22. Budding
23. Flowers
25.
26. Describe where heredity information is stored?
Key Vocabulary – describe AND give an example
Vocabulary
Description
27-28 Heredity
29-30 Dominant
31-32 Recessive
33-34 Homozygous
35-36 Heterozygous
Example
37-38. What happens when an offspring receives one dominant allele from its mother and one
recessive allele from its father? Explain.
39-43. Horns are dominant to no horns in cows. List all the possible genotypes with their
phenotype?
44-. Why are dominant traits more common than recessive traits?
45-47. Cross a heterozygous red flower with a white flower
48. What percent of the offspring are red
flowers?
49. What percent of the offspring are
homozygous?
50-52. Cross two hybrid red flowers
53. What is the phenotype ratio of the
offspring?
54. What is the genotype ratio of the
offspring?
55-57. Cross a purebred red flower with a homozygous white flower
58. What percent of the offspring are
heterozygous?
59. What percent of the offspring are white
flowers?
Heredity Review KEY
Important People – What are they known for?
1. Gregor Mendel – Father of genetics (studied pea plant)
2. Reginald Punnett – Invented the Punnett Square
Identify the following as Asexual or Sexual Reproduction:
3. Uniform - Asexual
10. Unique - Sexual
4. Same - Asexual
11. Clone - Asexual
5. Bacteria - Asexual
12. Humans - Sexual
6. Binary Fission - Asexual
13. Butterfly - Sexual
7. Different - Sexual
14. Variety - Sexual
8. Ivy vine - Asexual
15. Yeast - Asexual
9. Vegetative Propagation16. 1 parent - Asexual
Asexual
17. Dogs - Sexual
24.
18. Regeneration - Asexual
19. 2 parents - Sexual
20. Diverse - Sexual
21. Identical - Asexual
22. Budding - Asexual
23. Flowers - Sexual
Asexual 25.
Sexual
26. Describe where heredity information is stored?
Cells (have a)  Nucleus (that contains)  Chromosomes (which are made of) DNA (which
has sections called) Gene (is made of 2 alleles – one from each parent)  Allele (code for a
trait - dominant or recessive)
Key Vocabulary – describe AND give an example
27-28. Heredity – Passing of genetic instructions from generation to generation; Mom passes
brown eyes to daughter
29–30. Dominant – Always shown when present; BB or Bb
31–32. Recessive – Only seen when 2 are present; bb
33–34. Homozygous – Same alleles (purebred); HH or hh
35-36. Heterozygous – Different alleles (hybrid); Hh
37-38. What happens when an offspring receives one dominant allele (F) from its mother and
one recessive allele (f) from its father? Explain. Ff – the dominant allele masks the recessive
allele so the dominant trait is shown in the phenotype
39-43. Horns are dominant to no horns in cows. List all the possible genotypes (letters) with
their phenotype (physical characteristic)?
Genotype Phenotype
HH Horns
Hh
hh - No horns
44-. Why are dominant (G) traits more common than recessive (g) traits?
When both are present (Gg) the dominant trait takes over and is the one seen; Dominant
traits mask recessive traits
45-47. Cross a heterozygous red flower (different, red dominant = Rr) with a white
flower(white recessive, rr)
48. What percent of the offspring are red
(Dominant – R) flowers?
50% (Rr)
49. What percent of the offspring are
homozygous (same, RR or rr)?
50% (rr)
50-52. Cross two hybrid red flowers (different=Rr)
53. What is the phenotype (physical) ratio
of the offspring?
(Red:White) 3:1
54. What is the genotype (letters) ratio of
the offspring?
(RR:Rr:rr) 1:2:1
55-57. Cross a purebred red flower (same, red dominant=RR)with a homozygous white
flower(same, white recessive=rr)
58. What percent of the offspring are
heterozygous (Different, Rr)?
100% (Rr)
59. What percent of the offspring are white
flowers (recessive, rr)?
0% (rr)