Biology Puns

Question 1

In humans brown eyes are dominant over blue eye. What type of offspring would you expect if you crossed a heterozygous brown eyed person to a heterozygous brown eyed person.

Answer 1

Bb x Bb
___________________
BB = 25%
Bb = 50%
bb = 25%
________________________
Brown 75%
blue 25%

Question 2

A windows peak hairline is dominant to straight line. Cross a heterozygous windows speak hairline person to a straight hairline person.

Answer 2

Hh x hh
_________________
Hh = 50%
hh = 50%
___________________
windows peak 50%
straight 50%

Question 3

in humans premature gray hair is dominant to normal hairline. Cross a homozygous premature gray haired person to a homozygous normal haired person.

Answer 3

GG x gg
______________________
GG = 100%
______________________
grey hair 100%

Question 4

In humans tongue rolling is dominant to non tongue rolling.What would be the expected type of offspring if a homozygous tongue roller was crossed to a heterozygous tongue roller.?

Answer 4

RR x Rr
_________________
RR = 50%
RR = 50%
__________________
Rollers 100%

Question 5

Brown hair is dominant over light colored hair. Cross two light haired people

Answer 5

bb x bb
________________
bb = 100%
__________________
light 100%

Question 6

In garden peas, round peas are dominant to wrinkled peas. If you crossed a homozygous dominant and homozygous recessive whatwould be the genotype and phenotype of the offspring.

Answer 6

RR x rr
___________
RR = 100%
______________
round = 100%

Question 7

In a certain plant yellow fruit is dominant to white fruit. A heterozygous plant with yellow fruit is crossed with a plant with white fruit.

Answer 7

Yy x yy
_____________
Yy = 50%
yy = 50%
___________________
yellow = 50%
white = 50%

Question 8

In corn, normal kernels are dominant to waxy kernels. If you crossed a waxy kernel plant to a heterozygous normal plant what type of seeds would be produced.

Answer 8

nn x Nn
___________________
Nn = 50%
nn = 50%
_____________________
Normal = 50%
waxy = 50%

Question 9

In chickens, white skin is dominant to yellow skin. If a yellow skinned chicken mates with a heterozygous rooster. What % chance is there of producing a yellow skinned offspring.

Answer 9

Parents: ww x Ww
__________________________
50% yellow skinned