Which of the following describes/represents an allele (select 2)
4 points
4
Question 2
2.
Rr can be described by which of the following? (select 2)
4 points
4
Question 3
3.
Which of the following represents/describes a phenotype (select 2)
2 points
2
Question 4
4.
An allele from each parent genotype goes above or beside a box in a Punnett square. These alleles represent the genes found in the possible egg and sperm of the parents which are created in.....
2 points
2
Question 5
5.
The four boxes inside a punnett square contain the possible genetic combinations (genotypes) of the offspring that a set of parents can create through
2 points
2
Question 6
6.
Marcia and Millie Biggs are fraternal twins. They looked almost identical when they were born but their difference in skin tone became more apparent as they aged. As brown-eyed Millie started to become darker skinned, blue-eyed Marcia took on a lighter complexion and grew blonde, curly hair. The twins' mom is white, while their dad is Jamaican. Which of the following is true?
2 points
2
Question 7
7.
As the twins got older, their mother was diagnosed with cystic fibrosis. Mom took the test to find
out if she carried the mutated cystic fibrosis gene (CFTR). The test came back positive. Normally, the CFTR gene regulates mucus clearance from the respiratory tract. But some mutations in the CFTR genes prevent this clearance and mucus builds up in aireways making it hard to breathe. Everyone has two copies of the CFTR gene, one copy inherited from their mother and one from their father. The CFTR gene follows a pattern complete dominance.
F= No cystic fibrosis (DOMINANT)
f= Cystic fibrosis (RECESSIVE)
What is the phenotype of an individual with the genotype Ff?
2 points
2
Question 8
8.
F= No cystic fibrosis (DOMINANT)
f= Cystic fibrosis (RECESSIVE)
If an individual cystic fibrosis....what must their genotype be?
4 points
4
Question 9
9.
F= No cystic fibrosis (DOMINANT)
f= Cystic fibrosis (RECESSIVE)
The twins' mom is homozygous recessive for CFTR, the dad is heterozygous for CFTR. What chance do the twins each have of having cystic fibrosis? In the show your work tab, first identify the parent genotypes then, complete the Punnett square as evidence for your answer.
4 points
4
Question 10
10.
Marcia and Millies mom has curly hair. Marcia and Millies dad has straight hair. Hair texture follows the pattern of incomplete dominance so if a person has one allele for curly hair and one for straight they will have wavy hair. C= curly hair, C'= straight hair. If Marcia and Millie's parents have another child...what is the chance the offspring has wavy hair?
2 points
2
Question 11
11.
For eye color, the allele for brown eyes (B) is dominant to the allele for blue eyes (b). If Marcia's dad has brown eyes which of the following could be his genotype?
4 points
4
Question 12
12.
Marcia and Millie are fraternal twins, in other words they have just as much in common as any two siblings who are not twins.
Millie has blue-eyes while Marcia has brown eyes.
If their mom is homozygous for blue eyes, and their dad has brown eyes, what is their dads genotype? Use the Punnett Squares to provide evidence for your answer.