Bio test 3 – 337 questions- WITH COMPLETE SOLUTIONS

Hydrangeas are a flowering plant with large showy blooms. When a plant is grown in aluminum rich soil it has blue flowers; if the same plant is transplanted into soil that is lacking aluminum the flowers produced will be pink. This is an example of correct answer: environmental effects Which of the following represents the physical characteristics of the individual? correct answer: phenotype What are alleles? correct answer: Alternative forms of a gene for a single trait, such as blue eyes or brown hair In a test cross, an organism with a dominant phenotype, but unknown genotype is crossed with which of the following to establish its genotype? correct answer: homozygous recessive In peas, yellow is dominant over green in seeds. With which of these is it best to cross a yellow-seeded pea plant to determine whether it is homozygous or heterozygous? correct answer: a green-seeded plant What type of inheritance is represented by the above Pedegree? Remember, affected individuals are represented by filled and shapes correct answer: Autosomal dominant In a Mendelian monohybrid cross involving two homozygous genotypes, the ____ generation is always completely heterozygous. correct answer: F1 A woman who can roll her tongue (presumably dominant) is married to a man who cannot. Two of their four children can roll their tongues and two cannot. If A = roll tongue and a = cannot roll tongue, then what is the genotype of the parents? correct answer: woman Aa; man aa In guinea pigs, B = black, b = brown, S = short hair, s = long hair. Two heterozygous individuals reproduce. The expected results are correct answer: 9 black short hair, 3 black long hair, 3 brown short hair, 1 brown long hair. In guinea pigs, B = black, b = brown, S = short hair, s = long hair. A heterozygous black, short haired animal reproduces with a brown, long-haired animal. What is the