Exploring the Basics of Genetics

The video tutorial introduces key genetic vocabulary, including traits, genes, alleles, genotypes, and phenotypes, using fruit flies as examples. It explains the differences between homozygous and heterozygous alleles and discusses the implications of dominant and recessive traits. The tutorial also covers the concept of wing shape variations in fruit flies, highlighting the genetic factors that influence these traits.

What is the main focus of this unit?

• Mathematics

• Genetics

• Chemistry

• Physics

Tags

NGSS.MS-LS3-1

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NGSS.MS-PS1-2

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What is a trait?

• A type of gene

• A characteristic

• A type of cell

• A type of protein

Tags

NGSS.MS-LS4-4

What are the variations of the body color trait in fruit flies?

• Short and tall

• Curly and straight

• Tan and ebony

• Blue and green

Tags

NGSS.MS-LS4-4

What is an allele?

• A type of cell

• A type of chromosome

• An alternative form of a gene

• A segment of DNA that codes for proteins

What does the genotype represent?

• The physical appearance of a trait

• The combination of alleles

• The type of chromosome

• The type of protein

What does homozygous mean?

• Having one allele

• Having no alleles

• Having two identical alleles

• Having two different alleles

What is a carrier in genetic terms?

• An individual who expresses a trait

• An individual who has no alleles

• An individual who has two dominant alleles

• An individual who carries a trait but does not express it

What does the phenotype represent?

• The combination of alleles

• The type of protein

• The physical expression of a trait

• The type of chromosome

What is the dominant allele for wing shape in fruit flies?

• Ebony

• Flat

• Curly

• Wild

Tags

NGSS.MS-LS4-4

What happens if a fruit fly gets two copies of the curly gene?

• It will have flat wings

• It will not survive

• It will have curly wings

• It will have normal wings

Tags

NGSS.MS-LS3-1

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