Question

chromosomes and genetics

1. edward and jenna had 4 children together. they have a few \interesting\ traits, shall we say! look at the

chromosome combinations that each child received and list their genotype and phenotype.
key: d = long eyelashes d = short eyelashes
b = brown eyes b = red eyes
f = freckles f = no freckles
g = vampire teeth g = no vampire teeth
t = tall t = short
w = werewolf fur w = no werewolf fur

child #1
from jenna: d, b, f, g, t, w
from edward: d, b, f, g, t, w
genotype phenotype
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________

child #2
from jenna: d, b, f, g, t, w
from edward: d, b, f, g, t, w
genotype phenotype
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________

child #3
from jenna: d, b, f, g, t, w
from edward: d, b, f, g, t, w
genotype phenotype
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________

child #4
from jenna: d, b, f, g, t, w
from edward: d, b, f, g, t, w
genotype phenotype
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________
______ ___________

©flying colors science

Explanation:

Step1: Extract alleles for Child #1

From Jenna: D, b, F, G, T, W; From Edward: d, B, F, g, t, w → Genotype: Dd, Bb, FF, Gg, Tt, Ww

Step2: Determine Child #1 phenotype

Dd=long eyelashes, Bb=brown eyes, FF=freckles, Gg=vampire teeth, Tt=tall, Ww=werewolf fur

Step3: Extract alleles for Child #2

From Jenna: D, b, F, G, T, W; From Edward: d, B, f, g, t, w → Genotype: Dd, Bb, Ff, Gg, Tt, Ww

Step4: Determine Child #2 phenotype

Dd=long eyelashes, Bb=brown eyes, Ff=freckles, Gg=vampire teeth, Tt=tall, Ww=werewolf fur

Step5: Extract alleles for Child #3

From Jenna: D, b, f, G, t, W; From Edward: d, B, f, g, t, w → Genotype: Dd, Bb, ff, Gg, tt, Ww

Step6: Determine Child #3 phenotype

Dd=long eyelashes, Bb=brown eyes, ff=no freckles, Gg=vampire teeth, tt=short, Ww=werewolf fur

Step7: Extract alleles for Child #4

From Jenna: D, b, f, G, t, W; From Edward: d, B, F, g, t, w → Genotype: Dd, Bb, Ff, Gg, tt, Ww

Step8: Determine Child #4 phenotype

Dd=long eyelashes, Bb=brown eyes, Ff=freckles, Gg=vampire teeth, tt=short, Ww=werewolf fur

Answer:

Child #	Genotype	Phenotype
2	Dd, Bb, Ff, Gg, Tt, Ww	Long eyelashes, brown eyes, freckles, vampire teeth, tall, werewolf fur
3	Dd, Bb, ff, Gg, tt, Ww	Long eyelashes, brown eyes, no freckles, vampire teeth, short, werewolf fur
4	Dd, Bb, Ff, Gg, tt, Ww	Long eyelashes, brown eyes, freckles, vampire teeth, short, werewolf fur