Biology Remote Learning

What type of inheritance fits the data in the pedigree shown?

• sex-linked dominant

• autosomal recessive

• autosomal dominant

• cannot be determined

Albinism is a disease that runs in Rebecca's family. On a family pedigree, she saw a shaded circle. This represented _____.

• a male carrier

• a female with albinism

• a female carrier

• a male with albinism

Rebecca's parents have normal pigmentation. However, Rebecca has albinism. Albinism is a recessive trait that is associated with the abnormal allele “a.” The normal allele, associated with normal pigmentation, is “A.” Rebecca could have which of the following genotypes?

• aa

• AA

• Aa

A carrier is an individual who has:

• One recessive and one dominant allele for a trait

• Two recessive alleles for a trait

• Two dominant alleles for a trait

• More than two alleles for a trait

Rebecca's parents have normal pigmentation. However, Rebecca has albinism. Albinism is a recessive trait that is associated with the abnormal allele “a.” The normal allele, associated with normal pigmentation, is “A.” Rebecca's parents could have which of the following genotypes?

• aa and aa

• AA and aa

• Aa and Aa

• Aa and AA

Albinism is a recessive genetic condition in which pigmentation (generally from melanin) is lacking. An individual with true albinism will have white hair (eyelashes & eyebrows included), very pale skin and red eyes. If each parent is heterozygous, what percentage of their offspring could be affected by albinism?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Fur color in rabbits is a trait that follows incomplete dominance. "B" allele controls black fur color. "b" allele controls white fur color. Because of incomplete dominance, rabbits can also show grey fur. Take a look at the punnet square. What % of the offspring will show the black phenotype?

• 0%

• 25%

• 50%

• 75%

• 100%

Which factor is directly responsible for the skin pigmentation you were born with?

• Your exposure to the sun

• Different amounts and types of melanin

• The food you eat

• Whether you live in hot or cold temperatures

Human skin color has different variations found at different lattitudes across the world. This is because of the increased success different variations gave to survival and reproduction. What process is responsible for the different skin color variations we see today?

• Cancer

• Artificial Selection

• Natural Selection

• Meiosis

At what latitude would an albino child face the most danger from UV radiation?

• 50

• 25

• 0

• -25

• -50