Pomarico Exam 4 Bio 1201 UPDATED ACTUAL Questions and CORRECT Answers

Pomarico Exam 4 Bio 1201 UPDATED
ACTUAL Questions and CORRECT
Answers
Another possible name for an allele is:


1. a gene
2. the DNA for a genetic trait on a chromosome
3. The DNA for a phenotypic trait (an observable trait) on a chromosome
4. several nearby related genes on a chromosome

5. all of the above - CORRECT ANSWER - All of the above


Why did Mendel use pea plants?


1. Mendel loved peas
2. the genetic of peas were already well studied so he could build on that work
3. peas have many different phenotypic variations
4. peas grew well in darks caves of the monastery

5. peas have male (stamens) and female (carpel) plower parts - CORRECT ANSWER -
peas have many different phenotypic variations
-very easy to observe
5. is not unique to peas


Mendel's Law of Segregation includes all of the following EXCEPT:


1. phenotypic traits come from alleles
2. one allele come from each parent
3. alleles behave independently from other alleles

,4. alleles are dominant and recessive

5. parental alleles separate when gametes form - CORRECT ANSWER - 3. alleles behave
independently from other alleles
- from Law of Independent Assortment


A purple pea flower has which of the following genotypes?


1. PP
2. PP or Pp
3. pp
4. pp or Pp

5. PP, pp, or Pp - CORRECT ANSWER - PP (homozygous) or Pp (heterozygous)


Mendel observed that traits like flower color and pea (seed) color did not correlate and behaved
separately and called this:


1. annoying
2. the law of segregation
3. the law of independent assortment
4. the law of allelic separation

5. the law of entropy - CORRECT ANSWER - 3. the law of independent assortment
-increases possibilities


When would you use a 16-square Punnett Square - CORRECT ANSWER - when tracking
two genes


If you have purple flower pea and do a test cross with a white flower pea and the offspring are all
purple, what was the genotype of the purple pea?

,1. PP
2. Pp
3. pp
4. PP or Pp

5. all of the above are possible - CORRECT ANSWER - 1. PP


If an organism has the genotype ppYyrr, how many recessive traits will it express?


1. 1
2. 2
3. 3
4. 4
5. 5

6. 6 - CORRECT ANSWER -2
- expressed= phenotype
- how many offspring would express this recessive traits
i


If you cross two homozygotes and get offspring with intermediate traits, this means the alleles
were:


1. incompletely dominant
2. recessive
3. epistatic
4. over-abundant

5. allelosteric - CORRECT ANSWER - 1. incompletely dominant
-if you are seeing intermediate traits, you are outside Mendelian genetics

, If you have type A blood but your child has type B blood:


1. your spouse has some explaining to do
2. you spouse has type B blood
3. your spouse has type O blood
4. your spouse has type B or AB blood

5. your spouse has type A blood - CORRECT ANSWER - 4. your spouse has type B or AB
blood


Which of the following produces the largest range of variations of a trait?


1. epistasis
2. polygenic inheritance
3. incomplete dominance
4. co-dominance

5. independent assortment - CORRECT ANSWER - 2. polygenic inheritance


Genetics often track thousands of F1 and F2 offspring, but humans only have a few offspring, so
instead of Punnett squares in humans genetics we use:


1. aminocentesis
2. pedigrees
3. test crosses
4. hydrangeas

5. segregation analysis - CORRECT ANSWER - 2. pedigrees


To document the occurrences of a particular trait or possible disorder across different generations
of your family, which genetic tool would you use?