OBJECTIVES
Chapter 12 Test: Mendelian Genetics
Eukaryotic chromosomes
1.How is genetic information organized in the eukaryotic chromosome?
2. How does this organization contribute to both continuity of and variability in the genetic information?
Inheritance patterns
3.How did Mendel's work lay the foundation of modern genetics?
4. What are the principal patterns of inheritance?
5. What is a Punnett diagram and what does it have to do with dominance, recessiveness, etc.?
6. What are the definitions of the following terms associated with Mendelian genetics and how are they used to interpret problems of inheritance?
P1 generation
F1, F2, etc
.
monohybrid
monohybrid
alleles
dihybrid
dominant
recessive
homozygous
heterozygous
genotype
phenotype
gamete
meiosis
crossing over
pedigree
testcross
phenotypic ratio
genotypic ratio
3:1 ratio
9:3:3:1 ratio
haploid
diploid
Punnett Square
7. What are Mendel's Laws of Segregation and Independent Assortment?
8. How does a backcoss or testcross work and when it is used by breeders?
9. How do the following terms relate to Mendelian genetics?
incomplete dominance
codominance
multiple alleles
polygenic inheritance
10. What is a karyotype ?
11. What are the causes and symptoms of the following genetic disorders?
Down Syndrome
Sickle Cell Anemia
Huntington Disease
Cystic Fibrosis
albinism
colorblindness
hemophilia
12. How is skin color in humans related to polygenic inheritance?
13. What is the diploid and haploid chromosome number in humans?
14. What are the fundamentals of X-linked inheritance?
15. How do you do the following Mendelian crosses andwhat would be their F1 phenotypic ratios?
a. Monohybrid
b. Dihybrid
c. Monohybrid Incomplete Dominance
d. X-linked
e. ABO blood types (Multiple alleles-Codominance)
a. What are the genotypes of males and females?
Males XY
Females XX
b. What do the following terms mean and how are they used in genetics problems?
genotype-the types of genes an organism contains
(T-tall, t-short)
phenotype-the physical appearance of an organism as the result of the genotype.
(T genotype-tall phenotype t short phenotype)
c. What is the genetic disease sickle-cell anemia and how is it inherited?
d. What is Down's Syndrome? What is trisomy of chromosome 21?
