WorksheetsBiology - Unit 8 Test - Mendelian Genetics
Total questions: 15
Worksheet time: 8mins
What did Gregor Mendel study to learn about genetics?
mice
pea plants
fruit flies
What is a gene?
a section of DNA that codes for a specific protein
a homologous chromosome
a single sister chromatid
What are alleles?
different versions of the same gene
sister chromatids
homologous chromosomes
What is the genotype of the offspring in this square?
BB, Bb, Bb, bb
purple, purple, purple, white
What is the phenotype of the offspring in this square?
BB, Bb, Bb, bb
purple, purple, purple, white
Which genotypes can produce offspring with the dominant phenotype?
AA only
Aa only
aa only
AA and aa
AA and Aa
Which genotypes can produce offspring with the recessive phenotype?
rr only
RR only
Rr only
RR and rr
Rr and RR
G = green
g = yellow
Cross a homozygous recessive green plant with a heterozygous yellow plant.
What percentage of offspring will be green?
50%
25%
75%
100%
R = round peas
r = wrinkled peas
Y = yellow peas
y = green peas
How many offspring will have wrinkled yellow peas?
3
5
6
1
Which flower shows incomplete dominance?
A
B
Which flower shows codominance?
A
B
B = normal
b = color blind
Cross a heterozygous female (XB Xb) with a normal male (XB Y).
For recessive trait what would we expect to see in phenotype of the offspring?
more color blind females than males
more color blind males than females
an equal number of males and females who are color blind
How many of these would be considered carriers for a recessive trait?
0
1
2
3
4
T = long tail
t = short tail
Which parents would produce offspring with 1/4 having short tails?
TT x TT
TT x tt
Tt x Tt
Tt x tt
tt x tt
mother = BO
father = AO
What blood types could their children have?
[Choose all that are true.]
A
B
AB
O
