Worksheets6F Genetic Combinations
Total questions: 9
Worksheet time: 15mins
Name
Class
Date
1.
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
a)
0%
b)
25%
c)
50%
d)
100%
2.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
3.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
4.
The different forms of a gene are called
a)
traits
b)
pollinators
c)
alleles
d)
hybrids
5.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
6.
Snap dragon color is a incomplete dominant trait. A red flower (RR) is crossed with white flower (rr)? What color are flowers that are Rr?
a)
Red
b)
Red and White
c)
White
d)
Pink
7.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
12.5%
b)
25%
c)
50%
d)
75%
8.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
9.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
100 %
