Y-: yellow S-: star
yy: black ss: starless
All the sneetches want their children to have stars on their bellies. An embryo with either YYss or yySS genotype is lethal. Y and S are two independently assorting autosomal genes. A true breeding yellow star bellied sneetch mated with a true breeding black starless sneetch and produced 50 F1 sneetches. The F1 then mated with each other and produced 840 F2 progeny.
What proportion of black star F2 would be true breeding?
Among 840 F2 sneetches, how many of them are black star bellied sneetches?
Among 840 F2 sneetches, how many of them are black starless bellied sneetches?
Answers: 1
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Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.
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Use the above pedigree for questions 1,2, and 3 1. what kind of genetic disorder is represented in the pedigree? a. recessive b. dominate refer to the pedigree in question 1. 2. is the mutated gene in this disorder located on a sex chromosome (x or y) or an autosome? a. sex chromosome b. autosome refer to the pedigree in question 1. 3. which generation has individuals that you are certain are heterozygous for the mutated gene? a. generation 1 b. generation 2 c. generation 3
Answers: 2
Y-: yellow S-: star
yy: black ss: starless
All the sneetches want their children to have star...
All the sneetches want their children to have star...
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