Chromosomes exchange genetic material in step 3.
<h3><u>Explanation</u>:</h3>
The meiosis is the type of cell division that takes place for gametogenesis. The meiosis has two phases - meiosis I and meiosis II.
The meiosis I has the events like crossing over and independent assortment which leads to the mixing of genes between homologous chromosome pairs and separation of homologous chromosome pairs. So the two cells that are produced from the meiosis I are genetically different. The step 3 shows the crossing over of prophase 1 of meiosis I. So, it shows the genetic difference between the offsprings and leads to genetic variation.
<span>In the forest service, people from different occupational areas would work, with a broad sense of service to nature and conservation of the same, they have a mission to protect the earth and serve the people and the nation with honor and pride, feeling nature so unpredictable</span>
Protection- the cranium and ribs protect the brain and vital organs in the chest
Shape- gives shape to the body and makes you tall or short
Support- holds your vital organs in place when playing sports. The vertebrae column holds the body upright
Movement- muscles are attached to bones, which are joined. When the muscles contract, the bones move
Blood Production- red blood cells(to carry oxygen) and white blood cells(to protect against infection) are produced in the bone marrow of some bones
I believe it's E. all of the above.
Ans.
Human reproduction involves release of sperm (male gamete) and egg (female gamete) and their fusion to form zygote that develops into embryo. In females, an egg is released each month as a part of a monthly cylce, called menstrual cycle. The release of egg is termed as ovulation, in which tiny eggs are send into the fallopian tubes for fertilization.
Hence, the correct answer is 'a). an adult female usually releases an egg from an ovary each month.'
