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Material for Exam 3- Spring 2003
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While camping in New Mexico, Wanda and Louise heard coyotes howling in the night. So when they visited a nearby state park, they asked a few questions about coyotes, and learned that wildlife biologists monitor the coyote population every year in that park (500 square miles). Annual counts of the coyotes resulted in the following data:
|
Year
|
Total
Number of Coyotes at Start of Year
|
Number
of Births for the Year
|
Number
of Deaths for the Year
|
|
1998
|
250
|
60
|
50
|
|
1999
|
260 |
45 |
80 |
|
2000
|
225 |
50 |
30 |
|
2001
|
245 |
50
|
25
|
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Wanda and Louise admired a venomous lizard displayed in the park visitors' center. The natural history of this venomous lizard, called a Gila Monster, explained that its venom contains a neurotoxin that causes paralysis and respiratory failure in small mammals.
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Skin pigmentation:
Couple 1 - both are heterozygous for albinism
Couple 2 - both are homozygous dominant for normal pigmentation
Couple 3 - the male is an albino, the female has normal pigmentation but her
father was an albino.
| Blood types: |
Male
|
Female
|
| Couple 1 |
AB
|
AB
|
| Couple 2 |
B
|
A
|
| Couple 3 |
O
|
O
|
Baby Jane Albino with Type O blood
Baby Shirley Normal pigmentation with Type AB blood
Baby Huey Normal pigmentation with Type O blood
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Each year, a few children are born defenseless against disease due to severe combined immune deficiency (SCID), a medical condition in which lymphocytes (including B-cells) do not function properly. There are several forms of SCID, the most common type being an X-linked recessive trait. Other forms of SCID may follow an autosomal recessive inheritance pattern or are the result of spontaneous mutations in a given individual.
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