<span>Genetic material is passed down from parents to offspring by DNA. The DNA copies itself and the number of chromosomes is split in the half from 46 to 23 chromosomes.</span>
Answer:
D
Explanation:
there are around as many bacteria cells as there are human cells in the human body.
Answer:
A adaptation is the action or process of adapting or being adapted
Explanation:
is mostly when a animal is adapted to something.
Guard cells in plants control water pressure
1 is C - see first attachment. Genotypes with Y's represent males, and big R represents red eyes, while little r represents white eyes. For example XRxr is a heterozygous (red-eyed) female, and XrYr is a homozygous white-eyed male.
2 is B because the absence of functional proteins and some ribosomes due to the mRNA strand is not as detrimental as the loss of the entire cell.
3 is B. (The insertion of 3 base pairs into a genetic sequence is the length of a single codon, meaning that only one amino acid in the entire polypeptide was added)