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Korolek [52]
3 years ago
10

What causes Down syndrome?

Biology
2 answers:
guajiro [1.7K]3 years ago
4 0
Im pretty sure that its nondisjunction
torisob [31]3 years ago
4 0

Answer:

Nondisjunction.

Explanation:

Down Syndrome is a condition caused by trisomy 21, in which the person has 47 chromosomes instead of 46. The error in cell division called nondisjunction    (causes trisomy 21).

Nondisjunction Is the failure of paired chromosomes to divide during cell division, so in this division both chromosome go to one daughter cell. This cause errors in chromosomes number such as Down Syndrome (Trisomy 21) and turner syndrome (Monosomy X).

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Why might there be more dissolved oxygen in a lake in Vermont than in a similar sized lake in Florida in summer?
givi [52]
In summer, the temperature of Vermont is lower than that in Florida. And the temperature is an important factor influences the gas dissolving ability. When temperature increases, the ability will decrease. So there is more dissolved oxygen in Vermont's lake.
4 0
3 years ago
Is it true that ocean biomes contain a wider biodiversity than land biomes why or why not?
EastWind [94]
The difficulty with this answer, lies in the fact that not all of land and ocean biomes have been completely explored. The ocean is vast, covering approximately 70% of the Earth's surface, with literally vertical miles or kilometers of depth, and with some areas with sparse to no biodiversity. The same can be said about certain areas of large deserts with very low levels of biodversity, void of life, like vast deserts of the Sahara or Gobi. But, the Amazon rain forest contains still unknown species of plant and animal life, just like the ocean. Because of its vastness, intellectually, I would say  the ocean contains more biodiversity, but the answer is scientifically, as of now, yet to be proven one way or the other.
3 0
3 years ago
What are 3 antibiotic factors where emperor penguins live
Dennis_Churaev [7]
Your Question;
<span>What are 3 abiotic factors where emperor penguins live?
My Answer;
First, we need to know what "abiotic" means. Abiotic non-living, now that we know what "abiotic" means we can determine three abiotic factors.  
One: Snow
Two: Wind and Water ( These are two different ones but I wanted to put it as one)
Three: Soil/Dirt.
Hope I helped, 
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</span>
7 0
3 years ago
What is the name of the process shown in the picture below?
Vikentia [17]

Answer:DNA replication

Explanation:

3 0
3 years ago
Read 2 more answers
What is the history of lyra?
nlexa [21]

Lyra  Latin for lyre, from Greek  is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.

Vega, Lyra's brightest star is one of the brightest stars in the night sky, and forms a corner of the famed Summer Triangle asterism. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables. These binary stars are so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.

8 0
2 years ago
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