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CSET Genetics

Subjects : cset, science, genetics
Instructions:
  • Answer 33 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. States that genes for different traits can segregate independently during the formation of gametes and helps account for the many genetic variations observed in pants - animals - and other organisms






2. Man is Pp and woman is pp Pp x pp equals Pp - Pp - pp - pp 50% chance






3. Explain how organisms can have the same phenotypes and different genotypes.






4. A cross between 2 pea plants hybrid for a single trait produces 60 offspring. Approximatley how many of the offspring would be expected to exhibit the recessive trait?






5. If a breeder wanted to discover whether a black guinea pig was homozygous (BB) or heterozygous (Bb) for a coat color - the animal in question would be crossed with an individual of what genotype?






6. An organism's physical appearance - or visible traits






7. Term used to refer to an organism that has two identical alleles for a particular trait BB






8. When a mouse with black fur is crossed with a mouse with white fur - all f1 generation offspring have gray fur. Which phenotypic results can be expected in the F2 generation.






9. In guinea pigs - black coat color is dominant over white coat color. The offspring of a mating between 2 heterozygous black guinea pigs would probably show a genotype ratio of...






10. Term used to refer to an organism that has two different alleles for the same trait Bb






11. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. bb






12. For a given trait - the 2 genes of an allelic pair are not alike. An individual possessing this gene combination is said to be...






13. Different Bb






14. 2 organisms may show the same trait - yet have different genotypes for that phenotype






15. A characterstic in which a person has 6 fingers per hand. Polydactlyl is dominant over the trait for 5 fingers. If a man who is heterozygous for this trait marries a woman withthe normal number of finger






16. One capitol letter W






17. Same BB






18. 6 fingers F






19. Kids heterozygous Ww






20. How many pairs of chromosomes do humans have?






21. Threadlike structures made of DNA molecules that contain the genes.






22. In peas - flowers located along the stem (axial) are dominant to flowers located at the end of the stem (terminal). Let A represent the allele for axial flowers and a represent the allele for terminal flowers. When plants with axial flowers are cross






23. (genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes






24. An organism with a dominant allele for a particular form of a trait will always exhibit that form of the trait. (ex. Bb --- The big B would be dominant B






25. Having two like genes






26. In horses - black color is dominant over chestnut color. 2 black horses produce both black and a chestnut colored offspring. If coat color is controlled by a single pair of genes - it can best be assumed that...






27. Dominance B






28. Chromosomes that do not determine the sex of an individual






29. In cabbage butterflies - white color (W) is dominant and yellow color (w) is recessive. If a pure white cabbage butterfly mates with a yellow cabbage butterfly - all the resuting (F1) butterflies are heterozygous white. Which cross represents the gen






30. Different forms of a gene






31. P is reccessive






32. The appearnce of a recessive trait in offspring of animals most probably indicates that...






33. Creates a blended phenotype; one allele is not completely dominant over the other