Answer:
The phenotypic ratio will be 3:1
Explanation:
As per this question there are two phenotypes for seed color, yellow and green. Both the parents are true breeding that means they are homozygous for this trait. Also, all the F1 plants have yellow seed color which clearly indicates that yellow seed color is a dominant trait while green is recessive trait.
The cross of true breeding plants as mentioned above is depicted as under:
Parents YY x yy
/ \ / \
F1 generation Yy Yy Yy Yy
So, as per the law of dominance because of the presence of Y allele, all these progeny will be yellow in color.
Next, when these F1 plants will be crossed, the result will be as under:
F1 generation Yy x Yy
/ \ / \
F2 generation YY Yy Yy yy
The genotypic ratio of F2 generation is 1:2:1
The phenotypic ratio of F2 generation is 3:1
It simply means that in F2 generation, 3 progeny which have allelic combination YY & Yy will be yellow colored while 1 progeny which has allelic combination yy will have green color.
Loamy soil is ideal for gardening because it contains c-mostly sand with very little clay or silt.
Loamy soil is good for gardening since this soil can retain water and nutrient, but if the water is too much it still can be drained away. The soil contains mostly sand which was bigger particle than silt and clay.
Nitrogen. Rocks have nitrogen in them. But just to be sure you should also just look it up to see if I am right.
1. Stars last forever
2. Nuclear fusion
3. Space
4. Name
5. D
6. B
7. C
8. A
