Answer:
coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
Explanation:
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Answer:
Even after an infection is over, your immune system continues to make antibodies. Once you test positive for the bacteria, your blood will continue to test positive for months or years even after the bacteria are no longer present.
Explanation:
using brain
Klinefelter syndrome
Klinefelter syndrome (KS), also known as 47, XXY, is a syndrome where a male has an additional copy of the X chromosome. The primary features are infertility and small, poorly functioning testicles. Often, symptoms are subtle, and subjects do not realize they are affected.
It looks like this:
Causes: Two or more X chromosomes in males
Complications: Infertility, autoimmune disorders, breast cancer, venous thromboembolic disease, osteoporosis
Treatment: Physical therapy, speech and language therapy, counseling
Usual onset: At fertilization
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Sorry b, gonna need to know that the observations are.
Answer:
1. Meiosis I
2. Tetrad
3. Tetrad
Explanation:
Crossing over refers to an event taking place in the cells undergoing meiosis cell division during which the exchange of material takes place. The process of crossing over takes place during pachytene of prophase I in meiosis I.
Crossing over takes place when the structure formed by the pairing of the four chromatids of the chromosomes called tetrad is formed. The formation of tetrad allows the exchange of genetic sequences, therefore, result in recombination.
The process of crossing over does not take place in the mitosis as the tetrad is not formed in the mitosis.
Thus, Meiosis I, Tetrad and tetrad are correct.
