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1.List whether the student was positive or negative for each characteristic and include whether the characteristic is dominant or recessive.

a.Blood type
b.Widow's peak
c.Free ear lobes
d.Tongue rolling
e.Hitchhiker's thumb
f.Left thumb dominance
g.Little finger bend
h.PTC taster
i.Mid-digit hair
j.Facial dimples
k.Freckles
l.Cleft chin

2.Can the student tell from blood type if the student is heterozygous or homozygous? describe.

3.Select a trait of interest.

A.What was the trait?

B.What is the phenotype for the trait, and is this the dominant or recessive allele for the trait?

C.What are the possible genotypes for the parents?

D.Include the results of one Punnett square, showing a possible combination between alleles for the trait from the parents by filling in the genotypes according to the numbers in the square, below. (Note: you do not need to submit the punnett square itself, only the results of the punnett square).

1 2
3 5 6
4 7 8

E.Based on the cross, what percent of children born to the parents would express the trait?

4.Create a Punnett square to determine the possibility of a couple having a color-blind child if the mother has the recessive trait on one X and the father is color-blind. HINT: Use Xb to indicate an X with the color-blindness trait. How many female offspring will be color-blind? How many male offspring?

5.What was the case number of the student's karyotype? What was the result of the student's karyotype? (Include the sex and the chromosomal disorder, if applicable. If there was no chromosomal disorder, the student must state that the individual was normal.) (5 points)

6.Give an ex of a situation in which it would be important to create a karyotype for an individual. describe.

7.Genetically speaking, why is it important not to mate with a close relative? describe.

8.Does a karyotype tell all of a person's genetic characteristics? describe.

9.Why is a photograph of cells in metaphase utilized when constructing a karyotype?

10.What does it mean to be a carrier of a genetic defective characteristic? When might it be important to know if one is a carrier? (5 points)

11.From the hemophilia procedure with a population of 120 individuals (n = 120):

A.What were the possible genotypes of the offspring?

B.What is the probability of males having hemophilia out of the entire population?

C.How many females would have hemophilia?

D.How many carriers would there be?

12.describe why more males tend to suffer from X-linked disorders than females.

13.The student has a friend that knows the student is taking Biology, and she is confused about her blood type. Her blood type is O, but her dad is A and her mother is B. She asks the student if it is possible for her parents to have a child that is O. describe the answer to her.

14. In a flower garden, the student has purple and white pansies. The student notices that a new pansy has sprouted. When it finally flowers, the pansy is lavender. describe how this happened.

15.With a botanist friend's help, the student decide to cross the lavender pansy with the white pansy. Will this result in any purple pansies? describe.

Biology, Academics

  • Category:- Biology
  • Reference No.:- M943858

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