Lesson 7/8 Assessment

A boy has albinism, but his sister does not have albinism. A = allele for not having albinism, a = allele for having albinism. Could one of their parents have the genotype 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.

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NGSS.HS-LS3-1

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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.

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NGSS.HS-LS3-1

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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.

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Use what you have learned about dominant and recessive genes to explain how Sam has Sickle Cell Disease when neither of his parents has Sickle Cell.

• Sickle Cell could be a dominant trait and even though his parents did not have the disease, they passed the allele to Sam.

• Sickle Cell could be a recessive trait. Even though Sam's parents did not have the disease, they carried the allele for Sickle Cell and each passed it to Sam.

• Sickle Cell could be a dominant trait and even though Sam's parents did not have the disease, he got it from his grandparents.

• Sickle Cell could be a recessive trait and even though Sam's parents did not have the disease, he got it from his Aunt and Uncle.

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Not all traits have just two variations. Besides height, what are at least two other traits in humans that have a range of variation? Choose all that apply.

• skin color

• widows peak

• tasting PTC

• hair color

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NGSS.HS-LS3-1

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Some traits, like height and eye color, are controlled by many genes. How do multiple genes for a trait affect the possible variations for a trait?

• The more genes that affect a trait, the fewer possible variations there are.

• The more genes that affect a trait, the more limited the variations will be.

• The more genes that affect a trait, the more variations there are.

• There will only be two variations of a trait. Either they have it or they don't.

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NGSS.HS-LS3-3

Compare the girl’s height to the boys’ height in the graphs below. What can you conclude?

• The girls are taller than the boys.

• Most of the boys are in the 150's range.

• The concentration of the girls is to the right of the concentration of the boys.

• The concentration of the boys is to the right of the concentration of the girls.

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NGSS.HS-LS4-3

True or False. Both genetics and the environment influence traits, such as height.

• True

• False

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The more genes that influence a trait, the _____ the range of possible variations for the trait.

• smaller

• wider

Which type of graph would be best to use when there is a large amount of data and a continuous range?

• Pie chart

• Line graph

• Bar graph

• Histogram