Genetics Vocab - Yllis & Elf Review

You get a set of TWO genes for each trait you have. Where do they come from?

• Mom only

• Dad only

• Grandparents with dominant alleles

• One from each parent

Tags

NGSS.MS-LS3-2

What happens when the two copies of instructions for a trait are NOT the same?

• Both phenotypes are expressed equally.

• The recessive phenotype is expressed.

• The dominant phenotype is expressed.

• No phenotype is expressed.

What is the term for the genetic makeup (two alleles) that cause an organism to express a trait?

• Phenotype

• Chromosome

• Trait

• Genotype

​A (a)   is the DNA or allele combination for a trait. The physical, expressed trait is called the ​ (b)  

• Genotype

• Phenotype.

Answer explanation

The genotype refers to the specific DNA or allele combination for a trait, while the phenotype is the observable physical expression of that trait. Thus, the correct answers are Genotype and Phenotype.

Tags

NGSS.HS-LS3-1

Which is an example of a genotype?

• Aa
• Brown hair

Tags

NGSS.HS-LS3-1

Which is an example of a phenotype?

• Aa
• Brown hair

Tags

NGSS.MS-LS4-4

Match the following terms or concepts with the correct definition or description.

• Chromosomes

• An organism that has TWO of the SAME alleles for a gene

• Genetics

• The scientific study of heredity

• Heterozygous

• Threadlike structures that contain DNA found in the nucleus of a cell

• Homozygous

• An organism that has ONE dominant and ONE recessive allele for a gene

Match each genotype to its description

• rr

• HOMOZYGOUS DOMINANT

• Rr

• HETEROZYGOUS

• RR

• HOMOZYGOUS

  RECESSIVE

Tags

NGSS.MS-LS4-4

Which allele has instructions for a narrow eye shape?

• N

• M

• e

• E

What phenotype is expressed when the genotype is "ee"?

• Pointy eyes

• Round eyes

• Flat eyes

• Narrow eyes

Tags

NGSS.MS-LS3-2