A lizard with a striped tail and a normal head is crossed with one having a normal tail and a spotted head. All of the F1 progeny are normal (no stripes or spots). What progeny would be expected to be produced by mating the F1 progeny with each other, if the genes conferring stripes and spots were on different chromosomes?
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Ответ:
The correct answer would be -9 normal : 3 striped : 3 spotted : 1 striped and spotted.
Explanation:
As the F1 progeny have no stripes or spots considered as normal, it means normal head and normal tail are dominant on their alternative traits. So, it is clear that the F1 progeny are heterozygous for both of the traits.
Henece the cross between the two F1 progeny is dihybrid cross of hetrozygous lizards which produces offspring in 9:3:3:1 ratio, where 9 are normal, 3 striped (dominant in one character), 3 spoted (dominant in other) , and 1 will be stripped and spotted (recessive).
Thus, the correct answer is - 9 normal : 3 striped : 3 spotted : 1 striped and spotted.
Ответ:
The thing that he could do in order to increase the size of the tomatoes is : Spray the plants with gibberellins
Gibberellins is some sort of hormones that could reduce the flowering of the plants which will increase the size of the fruit
Explanation: