
Inherited medical conditions and codominance
Presentation
•
Biology, Science
•
10th - 11th Grade
•
Medium
Dennis Yanga
Used 10+ times
FREE Resource
13 Slides • 17 Questions
1
Inherited medical conditions and codominance
Presentation of jamboards
Teacher-led discussion
Group work
Quiz
2
Presentation of Jamboards
Groups 1-4
3
Multiple Choice
People with albinism do not produce this pigment.
melanin
chlorophyll
albinin
melanyll
4
Multiple Select
What are the characteristics of people with albinism? Tick all that apply.
pale skin
light hair
pink eyes
sensitive to bright light
high tolerance to sunlight
5
Fill in the Blanks
Type answer...
6
Multiple Select
What are the characteristics of people with albinism? Tick all that apply.
pale skin
light hair
pink eyes
sensitive to bright light
high tolerance to sunlight
7
Multiple Choice
Which is an example of codominance?
human blood type
malaria
sickle cell anemia
albinism
8
Albinism
People with albinism do not produce melanin.
9
Characteristics
Pale skin, pink eyes, light hair
sensitive to bright light and burn easily under sunlight
10
Albinism is caused by a recessive allele
11
Multiple Choice
What causes albinos' pink eyes?
blood in retina showing up
special pigment in retina showing up
sensitivity to light causes retina to turn pink
12
Multiple Choice
A parent is a carrier of albinism. Which statement is INCORRECT?
parent is heterozygous
parent has normal skin
parent is also albino
13
Multiple Select
Both parents are carriers of albinism. Which is CORRECT about their offspring? Tick two.
25% are carriers
25% are albinos
50% are carriers
50% are albinos
14
Sickle Cell Anemia
A disease in which red blood cells can't carry enough oxygen.
15
Punnet square between heterozygous carriers of the sickle cell anemia
16
However, there is a benefit.
heterozygotes have both the sickle cell allele and the normal allele
they produce enough normal blood cells to reduce the effects of sickle cell anaemia, but also produce enough sickle cells to have increased resistance to malaria
17
In areas where malaria is common, there is a higher incidence of people who carry the HbS allele.
18
Multiple Choice
Which is the symbol for the sickle cell allele?
HbA
HbS
19
Multiple Choice
A person is a carrier of the sickle cell allele. What is the genotype of this person?
HbA HbS
HbA HbA
HbS HbS
20
Multiple Choice
What is the benefit of having the HbAHbS genotype?
increased resistance to malaria
increased resistance to sickle cell anemia
die easily from malaria
die easily from sickle cell anemia
21
Multiple Select
If both parents carry the sickle cell allele, what is the probability of their offspring having the sickle cell disease?
0%
25%
50%
75%
22
Codominance in human blood groups
In humans, there are three alleles for blood groups: IA, IB, IO
23
Codominance, in genetics, is a phenomenon in which two alleles are both expressed within an organism.
In human blood groups, the IA and IB alleles are neither dominant to each other, although both are dominant to the IO allele.
24
Cross between parents whose blood types are AB and O.
50% of the offspring are blood type A
50% of the offspring are blood type B
25
Multiple Select
What are the three alleles for human blood groups? Tick three.
IA
IB
IO
IC
26
Multiple Select
What are the possible genotypes of a person whose blood type is A? Tick all that apply.
IAIB
IAIO
IAIA
IBIB
IBIO
27
Multiple Choice
How many genotypes are possible for a person who has the blood group O phenotype?
one
two
three
four
28
Fill in the Blanks
A cross between two parents whose blood types are AB and O result in
Type answer...
29
Poll
I learned and will remember many things from this lesson.
strongly agree
agree
disagree
strongly disagree
30
Summary
Albinism and sickle cell anemia are inherited medical conditions and are both caused by a recessive allele.
The sickle cell allele offers an increased resistance to malaria.
Codominance occurs when both alleles are expressed in an organism.
The human blood type is an example of codominance.
Inherited medical conditions and codominance
Presentation of jamboards
Teacher-led discussion
Group work
Quiz
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