Basics of Genetics and Punnett Squares

What are versions of genes

• genetics

• heredity

• eggs

• alleles

If a pea plant has two genes (alleles) for purple flowers, this is called what?

• homozygous

• heterozygous

• hybrid

• recessive

Tags

NGSS.HS-LS3-2

If a pea plant has a gene for white flowers and a gene for purple flowers, this is called what?

• homozygous

• pure-breeding

• heterozygous

• recessive

What is an allele or gene that requires only one copy to be expressed?

• reformed

• physical

• recessive

• dominant

What is an allele or gene that requires two copies to be expressed?

• reversed

• recessive

• recombinant

• retrograde

When you write a dominant allele, it is written with

• an upper case letter

• a lower case letter

• a cursive letter

• a bold letter

When you write a recessive allele, the allele is written with a

• upper case letter

• lower case letter

• formal letter

• reversed letter

"AA, Aa, aa" are examples of what?

• dihybrid crosses

• monohybrid crosses

• phenotypes

• genotypes

Blue eyes and brown eyes are examples of what?

• prismatic coloration

• phenotypes

• genotypes

• masking traits

Tags

NGSS.MS-LS4-4

What are the genes or alleles for a trait called?

• genotype

• phenotype

Tags

NGSS.HS-LS3-2

NGSS.HS-LS1-1