Name:________________________________ Genetics Test 1) Which of these is an inherited trait? a) Big muscles b) Hair length c) Eye color d) Being able to whistle 2) What contains all the different alleles/genes for heredity in a cell? a) Chromosomes b) Punnetts c) Vacuoles d) Meiosis 3) When Mendel crossed a green pea plant with a yellow pea plant, he got all green plants. This means that the green trait is: a) Codominant b) Dominant c) Recessive d) Incompletely dominant 4) What is this diagram called? a) Punnett square b) Pedigree c) Homozygous d) Recessive 5)
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Which of the following cannot be inherited? a) Attached earlobes b) Dimples c) Hair color d) Knowing how to speak Why did Mendel use true-­‐breeding pea plants to start his experiments? a) He knew the alleles the parents would pass on. b) They were prettier. c) That was the only type that could self-­‐pollinate. d) They were green. What is the process called that Mendel used where he took pollen from one plant and put it on another? a) Self-­‐pollination b) True-­‐breeding c) Cross-­‐pollination d) Punnett square A homozygous dominant purple flower crosses with a homozygous recessive white flower. What percentage of the offspring are purple? a)
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25% 50% 75% 100% Name:________________________________ 9) A white flower is pp. What is its genotype? a) Flower b) pp c) White d) Pp 10) A white flower is pp. What is its phenotype? a) Flower b) pp c) White d) Purple 11) If a tall plant is Tt, which trait is dominant? a) Tall b) Short c) White d) Purple 12) In pretend aliens, B is blue and b is red. What would be a possible genotype of a blue alien? a) Blue b) Red c) Bb d) bb 13) In pretend aliens, B is blue and b is red. If a Bb crossed with a Bb, what percentage of offspring would be blue? a) 0% b) 25% c) 50% d) 75% 14) Which of the following is a heterozygous genotype? a) Pink b) Short c) Gg d) PP 15) Which of the following is homozygous recessive? a) HH b) Purple c) Hh d) hh 16) What stage of meiosis is shown here? a) Prophase I b) Telophase II c) Metaphase II d) Anaphase I 17) If a recessive trait is to be expressed, what type of genotype must it have? a) Homozygous dominant b) Homozygous recessive c) Heterozygous dominant d) Heterozygous punnett 18) If red and white show incomplete dominance, what color would RW be? a) Red b) White c) Pink d) Purple Name:________________________________ 19) How many cells are present at the end of meiosis? a) 1 b) 2 c) 3 d) 4 20) What type of cell is made through meiosis? a) Normal cell b) Bacterial cell c) Sex cell/gamete d) Virus cell For the following questions, fill in the Punnett Squares correctly, list the possible genotypes and correct percentages, then answer the question correctly. 21) A Pp flower crosses with a pp flower. Possible Offspring Genotypes What percentage of the offspring will be Pp? ________________________ 22) A pp flower crosses with a PP flower. (P = purple, p = white) Possible Offspring Genotypes What percentage of the offspring will be purple? ______________________ Name:________________________________ Key: 1)
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C A B B D A C D B C A C D C D C B C D C 23) A Pp flower crosses with a pp flower. P p p Pp pp Possible Offspring Genotypes PP: ______0%_______ Pp: ______50%_______ p Pp pp pp: ______50%_______ What percentage of the offspring will be Pp? _________50%____________ 24) A pp flower crosses with a PP flower. (P = purple, p = white) p p Possible Offspring Genotypes p Pp Pp PP: ______0%_______ Pp: ______100%_____ P Pp Pp pp: ______0%_______ What percentage of the offspring will be purple? ___________100%________