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Transcript
STUDY QUESTIONS FOR BLOCK I Heredity 1) If one parent has blond hair (homozygous), and one parent has brown hair (homozygous) and they have a kid with brown hair, do you think brown hair is a dominant or recessive trait? 2) Who was Gregor Mendel? 3) What did Gregor Mendel find out about dominant and recessive traits? 4) Why did Mendel self-pollinate plants? 5) If a male rabbit has big ears (BB) and the female rabbit has small ears (bb), what traits will their children have? 6) Brown hair is a dominant trait. Blond hair is a recessive trait. If one of your parents has blond hair (homozygous) and the other has brown hair (homozygous), what color hair would you have? 7) How are dominant and recessive traits different? 8) If an animal has white fur (RR) and an animal with black fur (rr)… a. Which color fur is dominant and which is recessive? b. What color fur will their children have? 9) Two Bigfoots mate and one has a genotype of Cc and the other has a genotype of cc. c is a recessive trait for red toenails. If they had a child, what is the probability that they have child with red toenails? 10) Do dominant traits appear more often? Why? 11) What is a trait? 12) What is heredity? HOW YOUR PHYSICAL TRAITS ARE DETERMINED 1) 2) 3) 4) 5) What is a gene? What is a phenotype? What is a genotype? What is incomplete dominance? What is the difference between genes and alleles?- Alleles are specific forms of genes. Genes are sections of chromosomes that code for a particular trait. 6) True or false: Either sex can be a carrier for a trait located on a non-sex chromosome (autosomal chromosome.) 7) Solve the Punnett square. F is a dominant trait for 5 toes. f is the recessive trait for 4 toes. What is the phenotype of each kid (1,2,3,4)? F f 1 2 F 3 4 f 8) What is the difference between genotype and phenotype? 9) A black fur rabbit and a white fur rabbit mate. There is incomplete dominance for fur color. What color will their baby rabbits most likely have? HOW GENETIC INFORMATION IS PASSED FROM PARENT TO CHILD 1) 2) 3) 4) What is meiosis? Draw the end result of meiosis. How are sex chromosomes made? In meiosis for humans, how many total chromosomes are produced in all 4 sex cells? 5) If long tails are a sex-linked trait, and mostly males have it, on which chromosome will it most likely be on? 6) Is colorblindness recessive, dominant or the result of incomplete dominance? 7) List the order of phases for Meiosis. Describe what happens in each phase. 8) What is the difference between mitosis and meiosis? 9) How are sex-linked disorders passed from parent to child? 10) What does homologous chromosomes have to do with meiosis? 11) How many sex chromosomes are in human nuclei? 12) How many pairs of homologous chromosomes do humans have? 13) What is an autosomal chromosome?