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frez [133]
3 years ago
13

Two species of flies, Drosophila melanogaster and Drosophila simulans, can mate. They usually do not mate, however, even if they

are kept together in a laboratory. Males court the females of both species, but the females prefer to mate with males of their own species. Which isolating mechanism does this describe?
Biology
2 answers:
Tems11 [23]3 years ago
8 0
Behavioral isolation. This is when animals that can otherwise mate do not mate because of differences in courtship behavior. These animals choose to mate with animals of their own species.
kifflom [539]3 years ago
8 0

Answer:

Explanation:

A) Behavioral

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What organ directs the rate of breathing?
KengaRu [80]
The medulla oblagonta. Its main function is to send signals to the muscles that control respiration to cause breathing to occur.
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3 years ago
True or false: <br><br> Mollusks are more closely related to roundworms than to annelids.
erik [133]

Answer:

False

Explanation:

Annelids are actually more closely related to species within the mollusk phylum than they are to their worm cousins in the flatworm and roundworm phyla. Although they look quite different on the outside, mollusks and annelids share a more recent common ancestor than roundworms and annelids.

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4 years ago
What are sponges? <br> but I need help.
posledela

Answer:

Explanation: Sponges are animals with dense skeletons that are highly adapted to their environments.

3 0
2 years ago
For most women, the American Academy of Pediatrics recommends exclusive breast-feeding for the first 6 months of the baby’s life
Naily [24]

Answer:

3- Breast-feeding can reduce an infant’s risk of infection, allergies, and certain chronic diseases.

.4- All mothers should consume 500 kcal extra daily while breast-feeding until weaning of the infant.

5- Women with AIDS or active tuberculosis should feed formula rather than breast-feed.

Explanation:

Breastfeeding is also a great benefit to the environment and society, that is, it does not require the use of energy for manufacturing or create waste or air pollution. Also, there is no risk of contamination and it is always at the right temperature and ready to feed. Given the importance of breastfeeding for the health of mothers and babies, Centers for Disease Control and prevention supports breastfeeding through hospital initiatives, work-site accommodation, continuity of care and community support initiatives. Colostrum is the earliest breast-milk produced, beginning in mid-pregnancy (12-18 weeks) and is continually produced for the first few days after baby's birth, it provides all the nutrients and fluid that your newborn needs in the early days, as well as many substances to protect your baby against infections.  Mothers with untreated and active tuberculosis infections are not advised to breastfeed. They may breastfeed after their infection is cured or brought under control so that it does not spread to the infant.

8 0
3 years ago
When providing care for a child immediately after a bone marrow aspiration, which nursing action is priority?
xxMikexx [17]

Answer: Monitor the site dressing and vital signs.

Explanation:

The bone marrow is the soft tissue inside bones that helps form blood cells. It is made up of a liquid part and a more solid part.  And it is found in the hollow part of most bones. The bone marrow is

The biopsy and bone marrow aspiration are usually done at the same time. Together, these two procedures may be called a bone marrow study.

Marrow aspiration is the removal of a small amount of this tissue in liquid form for testing. Bone marrow biopsy and bone marrow aspiration are procedures that allow samples of bone marrow (the spongy tissue inside some of the longer bones) to be removed and tested.  In a bone marrow biopsy, the doctor uses a needle to remove a sample of the solid part. In a bone marrow aspiration, a needle is used to remove a sample of the liquid part.

<u>Bone marrow aspiration and biopsy may indicate whether the bone marrow is healthy and producing normal amounts of blood cells</u>. Doctors use these procedures to diagnose and monitor blood and marrow diseases, such as some cancers and fevers of unknown origin.  <u>After the procedure, it is important to control the wound so that it does not become infected, and to monitor vital signs.</u>

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3 years ago
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