Answer:
The correct answer is -
The genotype of offspring - 1:2:1 (YY:Yy:yy)
The phenotype of offspring - 3:1 (dominant trait: recessive trait)
Explanation:
In this question, it is stated that there is a cross between Yy and Yy. By the genotype of the parents, we can say that Y is dominant for a particular trait and y is recessive and the parents are in the heterozygous condition in this cross. The gametes these parents will produce are - Y and y and Y and y
then the cross of Yy and Yy would be -
Y y
Y YY Yy
y Yy yy
Offspring from this cross are YY, Yy, Yy, and yy which means the genotypic ratio is - 1:2:1 and the phenotypic ratio is - 3:1 as three out of four are dominant.
Cell Theory is an appropriate term because it yet to be confirmed as well as a way to confirm it. However, it is believed to be true do the the amount of things that back up this theory. It also supports multiple other theories that stem from Cell Theory.
Metrology. evolution biology
Plants convert carbon into oxygen and chemical energy so without carbon they wouldn't have food/energy so they wouldn't be able to live
