Answer:
If crossing plants with hairy leaves and smooth leaves produces plants with smooth leaves in F1, the phenotypic ratio of plants with smooth leaves:hairy leaves in F2 will be 3:1.
Explanation:
It is assumed that, if the first descendants of this cross presented smooth leaves, this represents the dominant characteristic.
If in the crossing of two plants, the parental generation consists of two <u>pure plants for the characteristic aspect of the leaf</u>, one with hairy leaves (s) and another with smooth leaves (S), the first filial generation (F1) will be of hybrid plants with a phenotype of smooth leaves (Ss), which represents the dominant characteristic.
<u>Parental Generation</u>:
- Smooth leaves SS
- Hairy leaves ss
<u>Punnett Square F1</u>
<em>Alleles S S</em>
<em>s Ss Ss</em>
<em>s Ss Ss</em>
F1 : 100% plants with smooth leaves Ss
The second filial generation (F2) results from the crossing of F1 individuals, so:
<u>Punnett Square F2</u>
<em>Alleles S s</em>
<em>S SS Ss</em>
<em>s Ss ss</em>
The result of the offspring in F2 is:
<u>Genotype
</u>
- <em>Pure smooth leaves SS 25%</em>
- <em>Smooth hybrid leaves Ss (heterozygous)
: 50%</em>
- <em>Pure hairy leaves ss: 25%</em>
Genotipic ratio: pure smooth leaves:hybrid:pure hairy leaves 1:3:1
<u>Phenotype</u>
- <em>Smooth leaves SS + Ss: 75%</em>
- <em>Hairy leaves ss: 25%</em>
So the phenotypic ratio of smooth leaves: hairy leaves will be 3:1.
Answer:
Anaerobic respiration takes place without the use of oxygen whereas aerobic respiration uses oxygen at the end of the electron transport chain.
Explanation:
Glycolysis can occur without the need or oxygen because it is not needed in the metabolic chain. Glycolysis occurs in the cytoplasm of cell and produces pyruvate as the end products and 2 net ATPs. In the absence of oxygen, pyruvate is converted to lactic acid that is later excreted from the body.
In the presence of oxygen, the pyruvate is converted to acetyl-CoA and enters the Krebs cycle in the matrix of the mitochondria. Here the end products are water (from the reduction of oxygen) and 34 ATPs.
Note that CO₂ is also a byproduct in both Krebs cycle and Glycolysis.
The tropical rainforest is the moist biome which is present near the equator of the Earth. These rainforests receive an average of 60-160 inches of rainfall per year with no dry season throughout the year. In these forests, the canopy of the trees prevent the sunlight from reaching the floor of the forest. This makes it difficult for the vegetation to survive on the floor as sunlight is essential for the growth of the vegetation on the floor.
Hence, the correct answer is 'option - C - sunlight'.
Answer:
The ability to change internal body temperatures to match changing external environmental temperatures
Explanation: this is basically the same thing as homeostasis as this is occurring in warm blooded mammals