Answer: The correct answer is -
The new DNA molecule consists of one new strand and one old strand of DNA.
DNA replication is a process of formation of two molecules of DNA from a single DNA molecule (which is double stranded).
In this process, the two DNA strands of the original DNA are first separated so that the template strands are exposed.
Using the template strands, enzyme DNA polymerase adds nucleotides (in the direction 5' to 3') in a complementary manner-
For adenine, thymine, guanine, and cytosine in the template strand, thymine adenine, cytosine, and guanine are added respectively.
The new DNA molecule consists of one new strand and one old strand of DNA. That is why, it is also called semiconservative replication.
Thus, option third is the right answer.
Arterial blood pressure is the volume of the blood entering the arteries, or veins. It's controlled by the kidney and when there's too much liquid, it rises, and when there's too little liquid, it drops. Sorry if this doesn't help, but I hope it does.
Answer: Let the homozygous dominant long needled be (LL) and the homozygous recessive short needled be (ll).
Then the genotypic ratio is four heterozygous long needles (4Ll) while the phenotypic ratio is four long needled trees.
Explanation: The long needles (L) is dominant over the short needles (l), therefore the genotype of all the offsprings are Ll and they will manifest outwardly as long needled trees.
See the attached punnet showing the cross between them
During photosynthesis, chlorophyll absorb light energy that is used to convert carbon dioxide from the air and water from the soil into glucose. Oxygen is released as a by-product. Some glucose is used for respiration, while some is converted into insoluble starch.
When conducting science experiments always remember to:
Use safety goggles to protect your eyes.
Always wash your hand after handling any chemicals or substances that are not food safe.
Do not mix chemicals that are not supposed to be mixed.
