Oogenesis and spermatogenesis both involve the chromosomal-reduction divisions of meiosis,which takes the gametes from the full complement of chromosomes to the Haploid number of chromosomes. Meiosis is the type of cell division that take place in the gamete cells, where diploid cells of the germ lines undergo cell division to yield haploid cells, normally the gametes are made through this process, that is, the ovum through Oogenesis, and the sperm through spermatogenesis. During fertilization the two combines to produce a diploid cell once again that undergoes continuous mitosis to form a zygote.
Answer: They have a son , Les who is 9 years old and healthy with myopia but not galactosemia. Les is unaffected with galactosemia.
Explanation:
From the family story, Leah is the only child affected with galactosemia while Les is unaffected and healthy.
Hanna's father and mother have three daughters and they are Hope, Holly and Banana( from oldest to youngest).
Hanan and Harry have an only son called John.
John married Jane and they have two children, Leah and Les.
Leah is girl that is affected with galactosemia and Les who is a boy and he is unaffected with galactosemia.
Jane's mother is Hilda and she has a brother called Joe. Joe married Jen and they have a son called Les.
That he is to drunk to learn
The position of the Earth in the solar system and more regional effects, such as carbon dioxide levels, all play a role in the causes of ice ages. Thus, option A is correct.
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What are factor that involve in ice age on earth?</h3>
When the orbital cycle turns back, these feedbacks—involving the spread of ice and the emission of greenhouse gases—work in reverse to warm the Earth once more.
A prolonged period of cooling of the Earth's surface and atmosphere is known as an ice age, which is marked by the development or presence of polar and continental ice sheets as well as alpine glaciers.
Flooding has increased along the U.S. coastline as a result of the warming, rising, and acidifying of the seas.
Therefore, The Earth is currently facing an ice age.
Learn more about ice age here:
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Carbohydrates- monosaccharides
Lipids- glycerol and fatty acids
Nucleic acid- nucleotides
Proteins- amino acids
