Genetics Vocab & Intro to Punnett Squares

If A = green pods and a = yellow pods, what are the PHENOTYPIC RATIOS of the offspring of a cross between two homozygous recessive parents? (Hint: Make a Punnet Square)

• 100% green pods

• 100% yellow pods

• 100% heterozygous

• 100% homozygous dominant

If A = green pods and a = yellow pods, what are the PHENOTYPIC RATIOS of the offspring of a cross between a homozygous dominant parent and heterozygous parent? (Hint: Make a Punnet Square)

• 100% green pods

• 100% yellow pods

• 100% heterozygous

• 100% homozygous dominant

If A = red fur and a = white fur, what color fur would Aa be?

• red

• white

• purple

• blue

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

A heterozygous tall pea plant (Tt) is crossed with a short pea plant (tt).

Perform a punnett square cross and determine the Genotype & %. (if this isn't familiar, re-watch this week's videos!)

• 100% Tt

• 50% Tt, 50% tt

• 75%Tt, 25%tt

• 25%TT, 50%Tt, 25%tt

What are the possible genotypes for this cross? And what percentage of each is produced? (if this isn't familiar, re-watch this week's videos!)

• TT = 25% Tt= 50% tt=25%

• all tall

• TT= 75% tt = 25%

• Tt = 100%

This type of allele masks the recessive allele and is capital ________________

• Dominant
• Homozygous
• Genotype
• Phenotype

Which of the following represents alleles for the heterozygous genotype?

• Aa

• aa

• AA

PHENOTYPE is

• the genetic make-up of an organism

• the physical trait of an organism

• nucleic acid

• Aa