Hetero vs Homozygous
Presentation
•
Science
•
6th - 8th Grade
•
Easy
Standards-aligned
Kurt Trout
Used 8+ times
FREE Resource
10 Slides • 39 Questions
1
2
Dominant means the stronger of the two genes.
It will mask the effect of the other gene.
3
Recessive means a trait that is overpowered by the dominant trait.
4
Multiple Choice
What does dominant mean?
It means the stronger of the two genes.
It means a trait that is overpowered by the dominant trait.
5
Multiple Choice
What does recessive mean?
It means the stronger of the two genes.
It means a trait that is overpowered by the dominant trait.
6
Dominant traits are written with a capital letter.
Recessive traits are written with a lowercase letter.
7
Multiple Choice
How are dominant traits written?
They are written with a lower case letter.
They are written with a capital letter.
They are written with both capital and lower case letters.
8
Multiple Choice
How are recessive traits written?
They are written with a lower case letter.
They are written with a capital letter.
They are written with both capital and lower case letters.
9
What is the difference???
10
Homozygous means that an individual has 2 genes that alike - BOTH are dominant or BOTH are recessive.
BOTH are capital or BOTH are lower case.
11
Heterozygous means that an individual has different genes-one dominant and one recessive.
One letter is capital and the other one is lower case.
Examples: Bb, Cc. Mm, Tt, Hh
12
Multiple Choice
What does homozygous mean?
It means that an individual has 2 genes that alike - BOTH are dominant or BOTH are recessive.
It means that an individual has different genes-one dominant and one recessive.
13
Multiple Choice
What does heterozygous mean?
It means that an individual has 2 genes that alike - BOTH are dominant or BOTH are recessive.
It means that an individual has different genes-one dominant and one recessive.
14
Homozygous dominant traits are written with 2 capital letters.
Examples: LL, TT, JJ
15
Homozygous recessive traits are written with 2 lowercase letters.
Examples: tt, rr, jj
16
Multiple Choice
Which of the following is an example of a homozygous dominant trait?
gg
Gg
GG
17
Multiple Choice
Which of the following is an example of a homozygous dominant trait?
RR
rr
Gg
18
Multiple Choice
Which of the following is an example of a homozygous recessive trait?
RR
rr
Gg
19
Multiple Choice
Which of the following is an example of a homozygous recessive trait?
hh
WW
Gg
20
Multiple Choice
How are heterozygous traits written?
hh
WW
Gg
21
Lets Review
Dominant- will mostly likely overpower other trait, written as CAPITOL letter
Recessive- will give in to other trait, written as lower case letter
Heterozygous- 1 dominant, and 1 recessive (dominant trait will be expressed)
Homozygous- 2 of the SAME traits
Homozygous Dominant - 2 DOMINANT traits, so 2 capitol letters
Homozygous Recessive- 2 RECESSIVE traits, so 2 lower case letters
22
Multiple Choice
AA
Homozygous
Heterozygous
23
Multiple Choice
aa
Homozygous
Heterozygous
24
Multiple Choice
Aa
Homozygous
Heterozygous
25
Multiple Choice
Bb
Homozygous
Heterozygous
26
Multiple Choice
bB
Homozygous
Heterozygous
27
Multiple Choice
aA
Homozygous
Heterozygous
28
Multiple Choice
BB
Homozygous
Heterozygous
29
Multiple Choice
bb
Homozygous
Heterozygous
30
Multiple Choice
What type of Genotype is this: AA?
Homozygous
Heterozygous
31
Multiple Choice
What type of Genotype is this: Aa?
Homozygous
Heterozygous
32
Multiple Choice
What type of Genotype is this: aa?
Homozygous
Heterozygous
33
Multiple Choice
What type of Genotype is this: Tt?
Homozygous
Heterozygous
34
Multiple Choice
What type of Genotype is this: Rr?
Homozygous
Heterozygous
35
Multiple Choice
What type of Genotype is this: DD?
Homozygous
Heterozygous
36
Multiple Choice
What type of Genotype is this: Pp?
Homozygous
Heterozygous
37
Multiple Choice
What type of Genotype is this: pp?
Homozygous
Heterozygous
38
Multiple Choice
What type of Genotype is this: TT?
Homozygous
Heterozygous
39
Multiple Choice
What type of Genotype is this: Mm?
Homozygous
Heterozygous
40
Multiple Choice
What type of Genotype is this: WW?
Homozygous
Heterozygous
41
Multiple Choice
What type of Genotype is this: Ll?
Homozygous
Heterozygous
42
Multiple Choice
What type of Genotype is this: ii?
Homozygous
Heterozygous
43
Multiple Choice
What type of Genotype is this: EE
Homozygous
Heterozygous
44
Multiple Choice
What type of Genotype is this: Hh
Homozygous
Heterozygous
45
Multiple Choice
What type of Genotype is this: Nn
Homozygous
Heterozygous
46
Multiple Choice
What type of Genotype is this: nn
Homozygous
Heterozygous
47
Multiple Choice
What type of Genotype is this: ff
Homozygous
Heterozygous
48
Multiple Choice
What type of Genotype is this: GG
Homozygous
Heterozygous
49
Multiple Choice
What type of Genotype is this: Gg
Homozygous
Heterozygous
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