Multiple ChoiceWhich of the following is the genotypic ratio of offspring created from a cross of two heterozygous parents for a single gene?a) 2:2b) 3:1 c) 1:2:1 d) 1:32066views8rank
Multiple ChoiceIn a single gene cross between a homozygous dominant parent and a homozygous recessive parent, which generation is always completely heterozygous?a) F1 generation.b) F2 generation.c) F3 generation.d) P generation.1716views3rank
Multiple ChoiceWhich of the following single gene crosses would always result in all offspring with the dominant phenotype?a) tt x tt. b) Tt x Tt. c) TT x tt. d) Tt x tt.1564views12rank
Multiple ChoiceAssume tall (T) is completely dominant to dwarf (t) in a certain species of plant. If a homozygous dominant individual is crossed with a homozygous dwarf, the offspring will __________. 662views
Multiple ChoicePea plants are tall if they have the genotype TT or Tt, and they are short if they have genotype tt. A tall plant is mated with a short plant. Which outcome below would indicate that the tall parent plant was heterozygous? 3874views1rank1comments
Multiple ChoiceIf an organism that is homozygous dominant is crossed with a heterozygote for that trait, the offspring will be __________. 808views
Textbook QuestionTwo fruit flies with eyes of the usual red color are crossed, and their offspring are as follows: 77 red-eyed males, 71 ruby-eyed males, 152 red-eyed females. The allele for ruby eyes is a. autosomal (carried on an autosome) and dominant. b. autosomal and recessive. c. sex-linked and dominant. d. sex-linked and recessive.649views
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