One sperm fertilizes the egg cell forming a diploid zygote, the other sperm fuses with the two polar nuclei forming a triploid cell that develops into endosperm
Answer:
Populations have variation in traits due to random mutation, crossing over and environmental conditions.
Answer: An error during transcription could produce a shorter protein or induce changes in the protein's sequence.
Explanation: Transcription is the process of single-stranded RNA synthesis from a DNA template (gene). During this process, RNA polymerase reads the DNA template and synthetize RNA, keeping the sequence. The RNA sequence will be reading later by ribosomes and protein will be produced. An error in transcription could produce changes in codons that are sequences of 3 nucleotides that determine aminoacids of the protein, and that would change protein folding and inactive it. Another possible result would be that error in transcription produce a premature stop codon that cause a shorter inactive protein.
I believe the answer is (B)
<span>a complex series of feeding relationships with many organisms interacting and depending on each other </span>
glucose entering a cell through proteins in the membrane requiring the use of ATP
