Albinism

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

Tags

NGSS.HS-LS3-2

LACKS SKIN PIGMENTATION

• DOWN'S SYNDROME

• DWARFISM

• ALBINISM

• HEMOPHILIA

Answer explanation

ALBINISM

Tags

NGSS.HS-LS3-2

CHARACTERIZED BY CROSS-EYED WITH RAPID EYE MOVEMENTS

• ALBINISM

• DWARFISM

• DOWN'S SYNDROME

• SICKLE CELL ANEMIA

Answer explanation

ALBINISM

VERY SENSITIVE TO LIGHT/SUNLIGHT

• DWARFISM

• DOWN'S SYNDROME

• SICKLE CELL ANEMIA

• ALBINISM

Answer explanation

ALBINISM

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the primary cause of albinism in humans?

• Genetic mutation affecting melanin production

• Excessive sun exposure

• Vitamin D deficiency

• Bacterial infection

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2