Answer:
Oogenesis in the female is the process that produces fertile eggs, ready for fertilisation by the male sperm. Each egg has only one of each of the 23 human chromosomes - normal body cells have a pair of each, having 46 chromosomes in total.
To produce egg cells, the process of oogenesis takes place in the female ovary. Progenitor cells divide through a cell division process called meoisis, which is also known as a reduction division.
Instead of one cell splitting into two identical cells, four cells are produced which have half the normal number of chromosomes - they are described as being haploid.
The four cells are all genetically different because the process of meiosis involves cross overs of the chromosomes during division, so mixing up the genes inherited from the woman's mother and the woman's father. This variation produces fitter offspring as it widens the genetic variation that is possible.Explanation:
Answer:
Mothballs can be dangerous to children
Explanation:
Mothballs may contain naphthalene which can cause red blood cells to rupture and cause hemolytic (blood-breaking) anemia. Children are at the highest risk of this condition because they can receive a higher exposure due to their lower weight or they can swallow mothballs thinking they are candy. Also, some children may have a hereditary condition called glucose 6 phosphate dehydrogenase deficiency which puts them at a higher risk.
Answer:
C
Explanation:
During their development, many organisms look similar, suggesting that very different organisms may have a common ancestor. - Think of the human fetal neural / spine development which mirrors other species.
Keplers 3rd law tells us that the square of the orbital period of a planet is proportional to the cube of the semi-major axis if the planet.
p^2 = a^3
So if the orbital period is 29.46 years, then:
(29.46)^2 = a^3
867.8916 = a^3
9.54 au = a
So the average distance between Saturn and the Sun is 9.54 au
au = atronomical units.
idk if i did this right, its been a while
Yes ,is the anger of these questions.