Q. How many times a cell will have to divide mitotically to form 128 cells?
Complete answer: The cell will have to divide 7 times mitotically, to form 128 cells.
Q. What is the importance of metaphase 2?
Metaphase II in Meiosis This is the phase where the two daughter cells produced during the first meiotic division, have their meiotic spindles start to draw the chromosomes to the metaphase plate, again. This is to prepare the centrosome for division in the next phase.
Q. Does crossing over occur in metaphase 2?
Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I. By meiosis II, only sister chromatids remain and homologous chromosomes have been moved to separate cells. Recall that the point of crossing over is to increase genetic diversity.
Q. What happens to a Spermatid to change it into a sperm cell?
Spermatids are transformed to spermatozoa through a complex differentiation process, which includes elongation, formation of tail, nuclear condensation, concentration of the mitochondria at the tail mid-piece and loss of cytoplasm.
Q. In which form of meiosis will only one viable gametes be produced?
When a primary oogonium undergoes meiosis, it will only result in one viable germ cell, or egg. The other smaller cells are called polar bodies and typically disappear following division. Spermatogenesis will result in four separate sperm cells, each capable of producing offspring.
Q. What kind of life cycle would an animal have if the gametes are the only haploid cells?
There are three main categories of sexual life cycles. In a diploid-dominant life cycle, the multicellular diploid stage is the most obvious life stage, and the only haploid cells are the gametes. Humans and most animals have this type of life cycle.
Q. Do animals have zygotic life cycle?
The gametic life cycle is the reproductive cycle found in animals and some protistans. During the gametic life cycle a reproductive cell produces haploid gametes (sex cells such as egg and sperm) that combine to produce a zygote.
Q. Do plants go through mitosis?
Most plants continue to grow as long as they live. They grow through a combination of cell growth and cell division (mitosis). The key to plant growth is meristem, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate.
Q. Can plants reproduce asexually?
Plants can reproduce asexually, without the fertilization of gametes, by either vegetative reproduction or apomixis.
Q. Why do plants reproduce asexually?
An advantage of asexual reproduction is that the resulting plant will reach maturity faster. Since the new plant is arising from an adult plant or plant parts, it will also be sturdier than a seedling. Asexual reproduction can take place by natural or artificial (assisted by humans) means.
