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EQ: WHAT ARE
GENOTYPES AND
PHENOTYPES?
Warmup
What is the difference between homozygous and
heterozygous?
What is the difference between genotypes and
phenotypes?
GENOT YPES
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Genotypes are the genetic makeup
Represented by letters
Homozygous: Both alleles are the same
Heterozygous: Both alleles are dif ferent
Two alleles per gene
Example GG
PHENOT YPES
 The actual trait that you see
 Determined by genotype
 Example…Brown hair, Blue eyes
WHAT ARE THE GENOT YPES?
Characteristics :
 Round seed dominant (R)
over wrinkled seed (r)
 Yellow seed dominant (Y)
over green seed (y)
 Colored seed coat (C) over
white seed coat (c)
 Inflated pod (I) over
wrinkled pod (i)
 Green pod (G) over yellow
pod (g)
 Axial flower (A) over
terminal flowers (a)
 Long stem (L) over shor t
stem (l)
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2.
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Homozygous round seed
Heterozygous round seed
Wrinkled seed
Homozygous yellow seed
Heterozygous yellow seed
Green seed
Homozygous colored seed coat
Heterozygous colored seed
coat
White seed coat
Homozygous green pod
Heterozygous green pod
Yellow pod
Homozygous long stem
Heterozygous long stem
Short stem
WHAT ARE THE PHENOT YPES
Characteristics :
 Round seed dominant (R)
over wrinkled seed (r)
 Yellow seed dominant (Y)
over green seed (y)
 Colored seed coat (C) over
white seed coat (c)
 Inflated pod (I) over
wrinkled pod (i)
 Green pod (G) over yellow
pod (g)
 Axial flower (A) over
terminal flowers (a)
 Long stem (L) over shor t
stem (l)
1.
2.
3.
4.
5.
6.
7.
8.
9.
LL
Gg
Rr
Ii
Aa
Cc
GG
Yy
yy
10. Gg
11.Rr
12 RR
13 cc
14 AA
15 aa
VOCAB REVIEW
 Dominant
 Recessive
 Gene
 Allele
 Cross
 Homozygous
 Heterozygous
 Heredity
 Trait
 Offspring
 Gregor Mendel
 Concepts:
 Convert Genotype to
phenotype
 Identify Homozygous
and heterozygous