In mitosis a cell divides to form two identical daughter cells. It is important that the daughter cells have a copy of every chromosome, so the process involves copying the chromosomes first and then carefully separating the copies to give each new cell a full set. Before mitosis, the chromosomes are copied.
Correct answer: D
A pollen is where male gametes are produced and so the number of chromosomes, as we are talking about gametes, is n. This means that the grain of pollen will only have a copy of each gene, and therefore only one allele for each gene - one S, and one T or t. So, the possible combinations are ST and St.
An active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. The substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme
<span>Since you are missing the options, I'm going to enumerate some possible answers:
- </span><span>memory loss
</span><span>- Wandering
</span><span>- Unpredictable behavior
</span><span>- inability to process visual sensory information
</span><span>- less concentration and attention
- Delusions and hallucinations
- Dysphasia
- Apraxia (can't make certain motor movements)
- loss of </span><span><span>Orientation</span>
- loss of language
</span>
Answer:
Millions of years ago, the Appalachians were taller than the Himalayas! Millions of years of erosion, however, have taken their toll. ... The crust that is now the Appalachians began folding over 300 million years ago, when the North American and African continental plates collided.
