Answer:
In the resulting offspring the correct proportions are for the genotype 1:1 and for the phenotype 1:1 (first option).
Explanation:
According to Mendel's Laws, the product of the cross between a heterozygous individual and a homozygous recessive for a character will always be a hybrid or recessive offspring as the Punnett square shows on image.
For the character -tall and short- of the pea plant:
Alleles t t
T Tt Tt
t tt tt
<u>For the genotype</u>: probabilities that in the offspring there are hybrid individuals with genotype Tt is 50% and recessive tt 50% .
<u>For the phenotype</u>: the probabilities of tall plants in the offspring are 50%, and 50% short plants.
A 50:50 ratio, for genotype and phenotype, is equivalent to saying that both phenotypic and genotypic ratio is 1:1.
Learn more:
Example of Punnett square brainly.com/question/1299325
Answer: Genetically engineered crops have an advantageous gene from another organism inserted into their genome.
The statement is true. Dead zones are the zones of oxygen depletion, which is caused by excessive running off of the fertilizers into the water body. These chemicals, particularly the nitrates, which are used by algae etc. which bloom by using the nitrates and use the oxygen present in the water. When they die, oxygen levels become critically low till then, for other aquatic animals like fishes etc., to survive.
