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Musya8 [376]
3 years ago
10

What type of disorder is sickle cell anemia? A.recessive B.lung C.dominant

Biology
1 answer:
Tom [10]3 years ago
4 0

Answer:

A Recessive

Explanation:

Generally, there are two types of disorders, progressive and recessive. When something is recessive, it is not a dominant gene. The reason why sickle cell anemia is classified as a recessive disorder is because it only affects some people, but it does not affect all those who share DNA. Hope this helps!

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How is it possible for one twin to get skin cancer but the other one doesn´t
tia_tia [17]

Looking at most newborn twins squirm contentedly in their cribs, you'd never guess that some were recently in peril. That's because carrying multiples raises the risks that a woman can suffer complications before she actually delivers.

Many twins are miscarried early in the pregnancy, often before a woman even knows she's pregnant. As reported in the International Journal of Fertility, only about one in eight embryos that starts as a twin is born as a twin. If they do survive, twins are usually born healthy. However, they are still more likely than other babies to have birth defects or to be born prematurely or underweight.

Carrying twins can be hard on you, too. You'll be more likely to develop pregnancy-related high blood pressure or diabetes. And there's a greater likelihood you will have a cesarean section when you deliver.

If you're carrying twins, some simple lifestyle changes and good prenatal care may help you reduce the likelihood of the following complications.

Low birth weight

Because they have to share nutrients and living space, newborn twins tend to be smaller than single babies. Even full-term twins often weigh less than 5-1/2 pounds each, making them vulnerable to a variety of health problems. You can help your babies reach a healthy size by making sure you put on enough weight during pregnancy. Try to eat 300 calories more each day than you would if you had a single baby (about 2,700 calories in total). If you had a healthy weight before pregnancy, you should aim to put on about 35 or 45 pounds.

Unequal size

Twins don't always share equally. In roughly 30 percent all twin births, one baby will be larger than the other. Some studies suggest that if one of your babies is at least 25 percent heavier than the other, one or both of them may be more likely to have breathing problems or need intensive care. Your doctor will track the growth of both your babies throughout your pregnancy. The first signs of unequal growth usually appear in the third trimester.

Twin transfusion syndrome

Twin transfusion syndrome poses a dangerous threat to identical twins who share a single placenta. It's normal for such twins to exchange blood during a pregnancy. But in about 20 percent of cases, one twin starts pumping large amounts of blood to the other twin, putting both of them at risk. In severe cases, the twin receiving the extra blood may develop heart failure while the other twin becomes dangerously anemic. Early diagnosis and treatment can slow the abnormal blood flow and lower the risk of complications.

Birth defects

Birth defects are common in twins, especially identical twins. Taking folic acid before and during pregnancy can help prevent neural tube defects. As reported in the medical journal The Lancet, however, about 10 percent of all identical twins are born with a birth defect such as a heart problem, a shortened limb, a club foot, or a dislocated hip (the conditions listed are linked to having less space in the uterus and would not be affected by folic acid.) Most of these conditions are treatable, however.

Risks to the mother

Your doctor will check you regularly throughout the pregnancy for signs of high blood pressure or diabetes. When detected early, both of these conditions can be controlled before they have a chance to threaten your pregnancy.

Special care

Carrying twins means you'll probably get extra attention from your doctor throughout your pregnancy. The doctor may suggest cutting back on activities between the 20th and 30th week of pregnancy, even if you haven't had any signs of labor. Many physicians also recommend an extra monitoring check on the babies' heart rate and movement, such as an ultrasound or nonstress test. A biophysical profile, which checks on heart rate, movement, and the amount of amniotic fluid in your body, might also be indicated. If you do go into labor prematurely, your doctor may suggest drugs to stop the labor or use corticosteroids to speed up the development of the babies' lungs.

It's possible that you may be able to deliver twins vaginally. But if the labor is difficult, the birth canal is too narrow, or one or both of the infants is in the breech position, you may have to undergo a c-section, in which the babies are delivered through an incision in your uterus. Talk to your doctor about what you can do to prepare for delivery.

Twins are a special challenge, both before birth and after. For now, your job is to stay healthy and get top-quality prenatal care. Two important people are counting on you.

Does this help lol :D

4 0
2 years ago
Read 2 more answers
In 2H*2SO*4 the number of hydrogen atoms is
Travka [436]

Explanation:

Sulfuric acid is represented by the formula H2SO4, which indicates two atoms of hydrogen, one of sulfur,and four of oxygen.

I hope it's helpful!

7 0
3 years ago
Explain how the water cycling through the atmosphere and hydrosphere affects weather and climate. Contrast weather and climate.
masya89 [10]
First, weather is the atmospheric condition occurring over a short period of time in a relatively small location. Climate, on the other hand, is the overall environmental condition over extended periods of time. Next, the water cycle is when water from the surface evaporates as water vapor under high temperatures and condenses in the atmosphere under lower temperatures and precipitates back to the surface. In the event that water evaporates more than it condenses then the weather will be warm to hot, the ground will be relatively dry, and drought over extender periods of time may ensue. On the other hand, if water condenses and precipitates more than it evaporates, then there will be a rainy season, and may extremely lead to landslides and floods.
6 0
3 years ago
Identify the nine cell structures that are labeled in the animal cell diagram given below. Provided below is a word bank; some o
loris [4]

A. The right answer is Rough endoplasmic reticulum

The granular endoplasmic reticulum is the place of synthesis (in the associated ribosomes) of the proteins secreted outside the cell and of the proteins and lipids constituting the membranes of the cellular organelles. Golgi, lysosomes, mitochondria, nucleus, ribosomes, vesicles ...). It participates in the correct folding of the proteins that have just been synthesized.


B. The right answer is Cytoplasm.

The cytoplasm corresponds to the medium found inside the cells. It is therefore delimited by the plasma membrane and contains within it, in eukaryotes, the nucleus, but also all intracellular organelles (ribosomes, endoplasmic reticulum, Golgi apparatus, mitochondria, various plastids, etc.).


C. The right answer is Smooth endoplasmic reticulum.

The endoplasmic reticulum is a eukaryotic cell organelle. He can be :

* granular (REG), that is to say associated with ribosomes that constitute the "granules";

* or smooth (REL).

The smooth endoplasmic reticulum participates in cellular metabolism, synthesizing lipids and storing calcium.


D. The right answer is Nucleolus

The nucleolus is the site of the transcription of ribosomal RNAs (rRNA) by the enzyme RNA polymerase I. These rRNAs (18S, 5.8S and 28S) will be used in ribosome production by associating with ribosomal proteins, a process that which is also facilitated by the factors contained in the nucleolus.


E. The right answer is Nucleus.

The nucleus contains the nuclear genome, consisting of DNA. DNA, bound to proteins, takes two forms, more or less condensed:

* euchromatin: less compacted, genes can be expressed;

* the heterochromatin: more compacted, on the periphery of the nucleus, the genes are extinguished or little expressed.

The nucleus is the main site of DNA synthesis (during replication for cell division) and RNA (for transcription).

The nucleus also contains a particular structure, the nucleolus, the locus of transcription of ribosomal RNAs.


F. The right answer is Mitochondria.

Mitochondria are small organelles (about 1 micrometer in length) essential in cellular energy processes.

The set of reactions that provides energy within the mitochondria constitutes cellular respiration.

Mitochondria are formed of an outer membrane, an inner membrane with many folds or ridges and a matrix which is the space between the folds of the inner membrane.


G. The right answer is Golgi apparatus.

The Golgi apparatus is an organelle of eukaryotic cells.

It is a major site for the transfer and sorting of molecules, as well as the synthesis of glycoproteins and sphingolipids.

By its position, between the endoplasmic reticulum and the plasma membrane, and its function, it is the intermediate between the maturation and the secretion of the proteins elaborated in the reticulum, it regulates the vesicular transport and is responsible for modifying the proteins by glycosylation, sulfation, etc.


H. The right answer is Lysosomes.

Lysosomes are 0.2 to 0.5 micron cell organelles present in the cytosol of all eukaryotic, animal cells, with the exception of erythrocytes ("red blood cells"). Their function is to carry out intracellular digestion (or extracellular digestion via exocytosis in the case of chondroblasts, osteoclasts and macrophages) thanks to about forty enzymes.


I. The right answer is Cell membrane.

The cell membrane delimits the cell. It separates the inside of the cell (the cytoplasm) from the outside environment. It is composed of phospholipids, between which proteins are inserted. Unlike the membranes of bacteria and plant cells, those of animal cells contain cholesterol molecules, which stiffens them and increases their impermeability to hydrophilic molecules.

5 0
3 years ago
Read 2 more answers
What does the allele frequency have to total in the hardy- Weinberg equilibrium?
Tanya [424]
In addition, the sum of the allele frequencies for all the alleles at the locus must be 1, so p + q = 1. ... In population genetics studies, the Hardy-Weinberg equation can be used to measure whether the observed genotype frequencies in a population differ from the frequencies predicted by the equation
4 0
3 years ago
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