Genetics and Selective Breeding

TRUE or FALSE: Selective breeding happens naturally over time

• TRUE

• FALSE

Answer explanation

Selective breeding is intentional!

All dogs belong to the same...

• Breed

• Variety

• Species

• Offspring

Tags

NGSS.MS-LS4-2

Selective breeding can be done with...

• Plants

• Animals

• Plants and animals

Tags

NGSS.MS-LS4-4

Which stage of the selective breeding process comes first?

• Only let individuals with the desired characteristics reproduce

• Select the offspring with the desired characteristics

• Select the individuals with the desired characteristics

• Repeat the process until the entire group have desired characteristics

Which of these is a common example of selective breeding?

• Chickens that produce lots of eggs

• Crops that catch diseases

• Plants that produce fewer tomatoes

• A, B and C are all examples of selective breeding

Tags

NGSS.MS-LS4-4

TRUE or FALSE: Selective breeding reduces genetic diversity

• TRUE

• FALSE

What is one advantage of selective breeding?

Tags

NGSS.MS-LS4-4

What is one disadvantage of selective breeding?

Which of these disorders is caused by a dominant allele?

• Sickle Cell Disorder

• Cystic Fibrosis

• Polydactyly

TRUE or FALSE: A heterozygous individual will show symptoms of a recessive condition

• TRUE

• FALSE

Answer explanation

A heterozygous individual has one dominant allele and one recessive allele. To have a recessive condition, an individual must have two recessive alleles (homozygous recessive)