AP Genetics Vocabulary [ClaytonBio]

P1 Cross: Heterozygous x Homozygous Dominant

• RrTt x RrTt

• RRTt x rrTf

• RrTt x RRTT

• RRTT x RrTt

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Traits: T= Tall, t= Short; B= Black, b=Brown

F1: Heterozygous for height and Homozygous recessive for color

• Ttbb

• TTBb

• TtBb

• ttBb

Tags

NGSS.HS-LS3-2

Which P1 cross will produce a 1:1 phenotypic ratio?

• MmFf x MmFf

• MmFf x mmff

• MmFf x MMFF

• MMFF x mmff

Which P1 cross will produce a 1 phenotypic ratio?

• MmFf x MmFf

• MmFf x mmff

• MmFf x MMFF

• MMFf x mmff

Tags

NGSS.HS-LS3-3

Which P1 cross will produce a 9:3:3:1 phenotypic ratio?

• MmFf x MmFf

• MmFf x mmff

• MmFf x MMFF

• MMFf x mmff

Tags

NGSS.HS-LS3-3

An organism of genotype AaBb can make gametes of all the following kinds except:

• AB

• Ab

• Bb

• ab

Tags

NGSS.HS-LS3-2

If AaBb is crossed with aabb, what proportion of the offspring would be expected to be aabb?

• 9/16

• 1/8

• 1/4

• 1/16

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

If the offspring of a cross show a 9/16 to 3/16 to 3/16 to 1/16 ratio (9:3:3:1), the parents of the cross have the genotypes

• AaBb x AaBb

• AaBb x aaBB

• aaBb x aabb

• aaBb x Aabb

Tags

NGSS.HS-LS3-3

Whenever a capital letter is present, a red color is produced. In a cross of AaBb x AaBb, how many red offspring would you expect out of 16?

• 9

• 15

• 12

• 3

Answer explanation

You do not know the other trait, but you know in the 9:3:3:1 Ratio..... 9 + 3 will be dominant traits. However, only 9 will show both dominant traits, the other 3 will show them independent of each other.

Assume that you mated two individuals heterozygous for each of two traits and obtained 80 offspring. How many of them would be expected to look like their parents?

• 25

• 45

• 60

• 80

Answer explanation

Ratio is 9:3:3:1 =

9/16 = 56%

56% of 80 is 45.

You do not have to do all this math, it's just a "little over half".

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3