7.8 Heredity and Genes

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

AA and Aa always show up as

• dominant
• recessive

What ratio of the offspring from the cross shown will be homozygous recessive for the  trait of tallness? 

• 0 in 4
• 1 in 4
• 2 in 4
• 4 in 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

• rr
• R
• RR
• RR or Rr

Which of the characteristics is a lion least likely to pass on to its offspring?

• fur color
• length of tail
• scars on leg
• body size

aa always shows up as

• dominant
• recessive

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

What gender has an X and a Y chromosome?

• male
• female