D hoped this helped you a lot! :s
The right answer is excess carbon dioxide.
For a cell to do a photosynthesis, it needs.
chloroplast
water (providing hydrogen and oxygen)
Carbon Dioxide (Providing Oxygen and Carbon)
And finally the sunlight.
This will produce, oxygen and glucose, two essential elements in animal life.
Answer:
D. Polymerase chain reaction
Explanation:
PCR is very percise; used to amplify or copy a specific DNA target from a mixture of DNA molecules by:
- two short DNA sequences (primers) are bind to start and end the DNA target
- perform the PCR; DNA templates is added to a tube that contains primers, free nucleotides, and the enzyme (DNA polymearse)
- it is mixed in a PCR machine that increases and decreases the temperature of the sample
- mixture is heated to seperate the double strnaded DNA templated into single strands
- mixture is cooled so the primers can bind to the DNA template
- the DNA polymerase will synthesize to new strands of DNA from the primers
- during synthesis, the end of the first cycle, the DNA molecule will consist of a new and old DNA strand
- PCR continues with added cycles to repeat the steps
- newly synthesized DNA segements serve as templates in later cycles; which can be copied over and over.
Answer:
single dominant epistasis
Explanation:
When a dominant allele at one locus can mask the expression of both alleles (dominant and recessive) at another locus, it is known as dominant epistasis. In other words, the expression of one dominant or recessive allele is masked by another dominant gene. This is also referred to as simple epistasis.
