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WorksheetsAlbinism
Total questions: 15
Worksheet time: 15mins
The number of genes that effect melanin production
leads to variation in albinism types
leads to differences in UV radiation
leads to differences in latitude
leads to large albinio populations
LACKS SKIN PIGMENTATION
DOWN'S SYNDROME
DWARFISM
ALBINISM
HEMOPHILIA
CHARACTERIZED BY CROSS-EYED WITH RAPID EYE MOVEMENTS
ALBINISM
DWARFISM
DOWN'S SYNDROME
SICKLE CELL ANEMIA
VERY SENSITIVE TO LIGHT/SUNLIGHT
DWARFISM
DOWN'S SYNDROME
SICKLE CELL ANEMIA
ALBINISM
A boy has albinism, but his sister does not have albinism. A = allele for not having albinism, a = allele for having albinism. Could their parents have been "AA"? Why or why not?
The boy could have gotten an A from mom and an A from dad and been albino.
If the parents only had A alleles, then there would be no way for the boy to end up with the albino genotype.
Two parents with AA genotypes have a chance of offpsring with an aa genotype because it could come from a grandparent.
The boy could have received both AA from either one of his parents.
When a boy with albinism grows up, could he have offspring that do not have albinism? A = allele for not having albinism, a = allele for having albinism. Choose all that apply.
If he had a child with a person that was AA, then their offspring would be Aa and would not have albinism.
All of his children would have albinism because he will give them the gene for albinism.
If he had a child with a person that was Aa, then their offspring could be Aa or aa. So there is a chance he could have offspring that does not have albinism.
If he had a child with a person that was aa, then their offspring would be aa and would not have albinism.
Why is only one allele enough to make a person non-albino? What is happening inside the organism?
The allele to make a person non-albino is stronger than the one that makes a person albino and it makes the non-albino allele go away.
The allele for not having albinism has instructions to make a chemical that produces melanin. This is the dominant allele and is enough to produce skin color.
If only one allele has the instructions for making the chemical to produce melanin, it means that the person will have albinism.
The allele to make a person non-albino is recessive and will show over the albino allele.
What is the primary cause of albinism in humans?
Genetic mutation affecting melanin production
Excessive sun exposure
Vitamin D deficiency
Bacterial infection
Which of the following is a common characteristic of individuals with albinism?
Increased melanin production
Enhanced night vision
Lack of skin pigmentation
Resistance to UV radiation
Albinism is most commonly inherited in which pattern?
Autosomal dominant
Autosomal recessive
X-linked dominant
Y-linked
Which of the following is a potential health risk for individuals with albinism?
Increased risk of skin cancer
Improved immune function
Decreased risk of sunburn
Enhanced vision
What role does melanin play in the human body?
Protects against UV radiation
Increases blood circulation
Enhances bone density
Regulates body temperature
Which of the following eye conditions is often associated with albinism?
Myopia
Astigmatism
Nystagmus
Cataracts
In an experiment, a scientist is studying the effects of UV light on skin cells from individuals with albinism. What is the expected outcome?
Increased melanin production
No change in cell structure
Higher susceptibility to DNA damage
Improved cell regeneration
How can genetic counseling benefit families with a history of albinism?
By providing a cure for albinism
By predicting the exact skin color of offspring
By offering information on inheritance patterns and risks
By ensuring all offspring will not have albinism
