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ASU BIO 182 EXAM 2 – Cala Exam Question Answers 2024
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ASU BIO 182 EXAM 2 – Cala ExamQuestion Answers 2024
What is Autosomal Dominant Inheritance? - correct
answers✅- Dominant Allele
- Males and females likely to inherit trait.
- "Dominant"- having at least one allele is all it takes
What is Autosomal Recessive Inheritance? - correct
answers✅- Recessive Allele
- Males and Females equally affected
- Needs both alleles to be recessive to have trait
- Having only one makes person a "carrier," no expression
How do bad alleles happen? - correct answers✅-
Mutations, change the genomic sequences
- Mutation can, have no effect, create a different product,
prevent gene from functioning
- Not all mutations are "bad"
What are Somatic Mutations? - correct
answers✅Mutations not transferred to next generation
Example: Cancer
When can mutations affect descending generations? -
correct answers✅If mutations occur in cells that
,ASU BIO 182 EXAM 2 – Cala Exam
Question Answers 2024
become gametes (in Meiosis), mutations can be passed to
next generation
What can cause mutations? - correct
answers✅Radiation, Viruses, Chemicals, or errors during
Meiosis or DNA replication
Homozygous parentals with different traits - correct
answers✅Phenotype dominant X Recessive
What is a Monohybrid Cross? - correct
answers✅Crossed F1 X F1
What is Backcross? - correct answers✅Crossed F1 back
to recessive parental
What is Probability? - correct answers✅Used when
more than two traits
0 = 0% & Event will not happen
1 = 100% & Event will happen
The sum of the probabilities of all possible outcomes of
an event must be 1
,ASU BIO 182 EXAM 2 – Cala Exam
Question Answers 2024
"and" --->Multiply
"or"----> Add
Genetic Example 1:
Mendel crossed two heterozygous smooth-, yellow-
seeded F1 plants. What's the probability that the
offspring was smooth-, green-seeded? - correct
answers✅- Probability that it's smooth = 3/4
- Probability that it's green = 1/4
- Probability that it's smooth and green =
3/ 4 x 1/4 = 3/16
Genetic Example 2:
What's the probability of obtaining a wrinkled-, green-
seeded, tall, purple-flowered offspring from a self-cross of
heterozygous round-seeded, yellow-seeded, tall, purple-
flowered F1 pea plants? - correct
answers✅AaBbCcDd×AaBbCcDd
- Probability that it's wrinkled (aa) = 1/4
- Probability that it's green (bb) = 1/4
- Probability that it's tall (CC or Cc) = 3/4
- Probability that it's purple (DD or Dd) = 3/4
- Probability that it's wrinkled, green, tall, purple =
3/4 x 3/4 x 1/4 x 1/4 = 9/256
, ASU BIO 182 EXAM 2 – Cala Exam
Question Answers 2024
Genetic Example 3: - correct answers✅
Probability Example 1:
Joe and Amy plan to have two children. Whats the
probability that the first is a boy and the second is a girl?
- correct answers✅-0.5 x 0.5 = 0.25
Probability Example 2:
What's the probability of having a family with all girl
children, assuming the family has 5 children? - correct
answers✅- 0.5 x 0.5 x 0.5 x 0.5 x 0.5 = (0.5)5 =
0.03125
What is Co-Dominance? - correct answers✅Two alleles
both affect the phenotype in separate, distinguishable
ways
I^A: Dominant
I^B: Dominant
I^A and I^B: C0-Dominant
i: recessive
How do blood types work?
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