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- 1. Multiple Choice
Meiosis results in _____________ because there is/are _______________.
2 identical haploid cells, 1 round of division
4 identical diploid cells, 2 rounds of division
4 unique haploid cells, 2 rounds of division
2 unique diploid cells, 1 round of division
- 2. Multiple Choice
Which of the following does NOT increase variation in gamete formation?
crossing over
fertilization of gametes
random assortment of chromosomes
condensation of chromatin
- 3. Multiple Choice
This process involves homologous chromatids exchanging genetic material to increase genetic diversity.
crossing over
random fertilization
independent assortment
gene flow
- 4. Multiple Choice
Which of the following does NOT support the concept of common ancestry for all organisms?
DNA/RNA (genetic code) are shared by all living systems
Ribosomes are found in all forms of life
Glycolysis takes place in all organisms
All organisms undergo sexual reproduction
- 5. Multiple Choice
Which of the following best describes the inheritance pattern of the shown pedigree?
Autosomal Dominant
Sex-Linked Dominant
Autosomal Recessive
Sex-Linked Recessive
- 6. Multiple Choice
Which of the following best describes the phenotypic ratio of 6:3:3:2:1:1?
Incomplete dominance & complete dominance on dihybrid cross
Incomplete dominance on dihybrid cross
Complete dominance on dihybrid cross
Epistasis on dihybrid cross
- 7. Multiple Choice
Describe the cause of a cross resulting in greater than 50% parental phenotypes and less then 50% recombinant phenotypes
Genes are linked on the same chromosome
Genes are located on different arms of the same chromosome
Gene are on different chromosomes
Gene are found in different gametes
- 8. Multiple Choice
In animals, traits determine by the mitochondrial DNA are inherited from the _______________.
mother
brother
father
sister
- 9. Multiple Choice
Identify the type of inheritance of the pedigree.
Sex-Linked
Mitochondrial
Autosomal
Random
- 10. Multiple Choice
Snowshoe hares are brown in summer and white in winter, describe this event.
Hares undergo phenotypic plasticity & environment influences gene express
Hares are white in winter due to the snow binding to hair follicles
Hares are brown from exposed dirt in summer
Hares remain hidden in the winter months inhibiting fur darken from sun
- 11. Multiple Choice
Describe the process of nondisjunction.
Homologous chromosomes exchange genetic information
The alignment of the chromosomes on the metaphase plate
Homologous chromosomes or sister chromatids remain attached during anaphase
The process of sperm and egg fusing to create a zygote
- 12. Multiple Choice
When does the process of independent assortment take place?
prophase I
metaphase I
anaphase I
telophase I
- 13. Multiple Choice
When does the process of crossing over take place?
prophase I
metaphase I
anaphase I
telophase I
- 14. Multiple Choice
What phase of meiosis describes the law of segregation?
telophase I
anaphase I
telophase II
anaphase II
- 15. Multiple Choice
Which of the following is the predicted ratio of a testcross with a dihybrid?
9:3:3:1
9:6:1
1:2:1
1:1:1:1
- 16. Multiple Choice
Which of the following is a predicted ratio of a dihybrid cross?
9:3:3:1
9:3:4
1:2:1
1:1:1:1
- 17. Multiple Choice
Describe why a male is more likely to be affected by a sex-linked trait?
Males have only 1 Y chromosome
Females have only 1 Y chromosome
Males have only 1 X chromosome
Females have only 1 X chromosomes
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