13_Human Genetics Review

Eggs will contain (a)   chromosome while sperm will have ​ (b)   chromosome.
Eggs or sperm will have ​ (c)   of each chromosome and ​ (d)   of each gene.

• 1 X
• 1X or 1Y
• 1 copy
• 2 copies
• 1 Y

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Match the following descriptions to the correct term.

• gene

• a specific variant of a characteristic that can be inherited

• trait

• A specific DNA sequence that tells a cell how to make a protein

• phenotype

• varying form of a specific gene such as "A" or "a"

• allele

• the sum of an individual's observable or measurable features

• genotype

• 
  genes of an individual for a particular trait

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An allele whose phenotype only shows up when two copies are present.

• hidden allele

• dominant allele

• recessive allele

• present allele

A heterozgous genotype results in which phenotype?

• Recessive Phenotype

• Dominant Phenotype

• Both traits being expressed

• Completely new traits

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NGSS.HS-LS3-1

In this Punnet Square, the mother has two __________ genes.

• recessive
• dominant

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What genetic disorder causes the body to produce unusually thick mucus in the lungs and intestines? 

• Cystic Fibrosis
• Sickle Cell
• Down Syndrome
• Hemophilia

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In order to have CF (cystic fibrosis), what genotype must the person have?

• Homozygous dominant

• Heterozygous

• Homozygous recessive

• DNA deletion mutation

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Which of these is an inherited single-gene (monogenic) trait that we discussed?

• Height

• Hair color

• Pattern baldness

• Ear Wax composition

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A male who has sickle cell disease has a child (aa). What is the chances of his offspring being homozygous normal (AA)?

• 0%

• 25%

• 50%

• 100%

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All of these are diseases can be sex-linked EXCEPT:

• Colorblindness

• Hemophilia

• Sickle Cell disease

• Muscular Dystrophy