WorksheetsDHS Heredity and Genetics Practice 2 of 2
Total questions: 11
Worksheet time: 6mins
Traits controlled by two or more genes from different chromosomes
medelian gene
monogenic
trait
polygenic
trait
allele
trait
Using the partially filled in punnett square what is the genotype that the daughter CANNOT potentially have?
XhXh
XHXh
XHXH
In humans, cystic fibrosis is a recessive genetic disorder that results in mucus clogging the lungs. If both parents are genetically heterozygous for cystic fibrosis, then what are their chances of having a child who DOES NOT HAVE the disease? (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)
25%
50%
75%
100%
In humans, the trait for dimples is dominant over no dimples. If a heterozygous parent is crossed with a homozygous recessive parent, then what is the probability this couple will have offspring with dimples? (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)
25%
50%
75%
100%
In a classic Mendelian cross, a homozygous plant that produces purple fruit is crossed with a homozygous plant that produces blue fruit. The seeds of all the offspring are purple. Why? (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)
the alleles are expressing incomplete dominance
the alleles are expressing codominance
The blue allele is recessive to the dominant purple allele
Albinism (b), is recessive to normal brown coloration (B). When an albino female was crossed with a brown male, they produced 2 offspring that had brown coloring and 2 that were albino. What was the genotype of the male parent?
BB
bb
Bb
Looking at the blood donation chart from our Blood Typing Lab, who is considered the "universal donor"?
A
B
AB
O
Looking at the blood donation chart from our Blood Typing Lab, who is considered the "universal recipient"?
A
B
AB
O
If a person with O blood type produces offspring with a person heterozygous for A blood, then what percentage of their offspring will be type O? (HINT: draw a punnett square to help solve the problem)
0%
25%
50%
100%
Which blood type would not be possible for children of a Type AB mother & a Type B father? (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)
A
B
AB
O
A heterozygous dihybrid cross, like the Labrador Retriever Activity, ALWAYS results in 9 different genotypes. Looking at the phenotype chart what fur color has the highest number of different genotypes?
black
brown
yellow
