Mendelian Genetics

The form of a gene that is always expressed if present is the ________form.

• recessive
• dominant
• heterozygous

• homologous

What law BEST explains why an organism with ‘Tt’ will show only the dominant phenotype?

• Law of Segregation
• Law of Independent Assortment
• Law of Heredity
• Law of Dominance

If an organism inherits one dominant allele and one recessive allele for eye color, their genotype would be:

• haploid

• homozygous

• heterozygous

• homologous

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NGSS.HS-LS3-1

Which Mendelian law of inheritance states that organisms inherit two copies of each gene and donate one copy to each of their offspring?

• Law of Attraction
• Law of Dominance

• Chromosome Theory of Inheritance

• Law of Segregation

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NGSS.HS-LS3-1

What is an allele?

• Variant form of a gene
• A type of protein
• A type of cell
• A form of mutation
• A type of virus

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What is a Genotype?

• the physical characteristics of an organism.

• the study of fossils.

• the process of photosynthesis in plants.

• the actual alleles inherited

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What is a Phenotype?

• The process of photosynthesis
• The study of animal behavior
• The genetic makeup of an organism that comes from both mom and dad via haploid cells

• The observable characteristics or physical traits of an organism

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If B is dominant for brown eyes and b is recessive for blue eyes match the genotype to the pheno type

• heterozygous

  brown eyes

• bb

• homozygous dominant brown eyes

• BB

• homozygous recessive blue eyes

• Bb

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NGSS.HS-LS3-1

How many alleles do you have for one gene?

• Two
• Five
• Four
• Three

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NGSS.HS-LS3-2

Where do your alleles come from?

• From our parents
• From our own mutations
• From our grandparents
• From our siblings

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