Mendel and Punnett Squares

Which of the following would produce a recessive phenotype?

• hh

• Rr

• Ww

• BB

What are the possible genotypes for this cross?

• TT = 25% Tt= 50% tt=25%

• all tall

• TT= 75% tt = 25%

• Tt = 100%

What is the missing allele?

• a
• A
• AA
• aa

Which of the these is homozygous?

• gg

• Yy

• Nn

• Ee

If you cross two heterozygous traits (Rr x Rr), as Mendel did in his second experiment, what ratio will you get between offspring with the dominant and recessive phenotypes

• 1:1
• 2:1
• 3:1
• 4:1

What organism did Mendel study?

• pea plants

• onions

• mice

• cats

What did Mendel discovery in his second experiment?

• The recessive trait reappeared!
• The dominant trait reappeared!
• The ratio was a 1:4
• All the offspring were true-breeding

What genotype would go in box 2?

• BB
• Bb
• bb

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

Which is a true statements about this picture?

• Brown is recessive
• Brown is dominant
• Blue is dominant
• Blue is codominant