6.3 Plant Breeding

What is the term used to describe offspring that are the result of mating between genetically similar kinds of parents?

• Hybrid

• Purebred

• Clone

• Cultivar

Which of the following describes a heterozygous genotype?

• Two identical alleles for a trait

• Two different alleles for a trait

• No alleles for a trait

• Three alleles for a trait

In plant breeding, what is the term for the observable characteristics of an organism?

• Genotype

• Phenotype

• Allele

• Hybrid

Tags

NGSS.HS-LS4-4

Which allele is considered dominant if a thorned plant offspring is produced?

• Thornless allele

• Thorned allele

• Semi-thorned allele

• Recessive allele

Tags

NGSS.HS-LS3-1

What is the process called when two genetically different plants of the same species are mated?

• Self-pollination

• Cross-pollination

• Mutation breeding

• Cloning

Which method involves exposing seeds to chemicals or radiation to alter plant characteristics?

• Hybridization

• Mass Selection

• Mutation Breeding

• Crossbreeding

Tags

NGSS.HS-LS3-2

What is the term for a plant that is vegetatively propagated to produce genetically identical offspring?

• Hybrid

• Clone

• Cultivar

• Line

What is the main goal of modern plant breeding?

• To produce plants with undesirable characteristics

• To introduce traits from one variety into a new genetic background

• To eliminate all genetic diversity

• To create genetically identical plants

Which of the following is true about F1 hybrids?

• They are true-to-seed

• They often exhibit hybrid vigor

• They are genetically unstable

• They are clones

What is the term for a group of plants within a species that are geographically isolated and develop unique traits?

• Species

• Sub-species

• Variety

• Cultivar

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5