Answer:
These are the factors that restrict the size of a cell:
-Surface area to volume ratio
-Nucleo-cytoplasmic ratio
-The fragility of the cell membrane
-Structures of the cell
The reason that the cell can grow to a certain limit is its surface area to volume ratio. For example as you air a balloon it expands to a certain volume but there is a limit you can fill air inside the balloon otherwise it will blast.
Explanation:
Answer:
Hetezygous
Explanation:
<em>The genotype of the initial green pod plant would be heterozygous.</em>
Let pea pod color be represented by C (c) alleles.
First, let us assume that the genotype of the green pea pod plant is homozygous dominant, CC. This was crossed with homozygous recessive, cc.
CC x cc
Cc Cc Cc Cc
<u>All the progeny will have Cc genotype with phenotypically green color. </u><u>This is in contrast to the result obtained from the test cross in the illustration, hence the genotype of the initial green pea pod plant cannot be homozygous dominant.</u>
Now, let us assume that the genotype is Heterozygous, Cc.
Cc x cc
Cc Cc cc cc
<u>50% of the progeny has Cc genotype with phenotypically green color while the remaining 50% has cc genotype with phenotypically yellow color. </u><u>This is consistent with the result from the illustration.</u>
Hence, the genotype of the initial green pea pod plant is heterozygous.
Answer:
Because the F1 plants all had a lowercase a/short plant allele, there was a 25% chance that two plants would contribute it to their offspring and they both did sometimes to make a aa offpsring.
Explanation:
All the F1 plants were heterozygous, so when they were crossed, the resulting genotypic ratio was 1 AA : 2 Aa : 1 aa. As you can see, this is the first time since the parent generation that there is a aa genotype and short plant phenotype, so that's why short plants reappeared.
