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Inessa05 [86]
3 years ago
15

Down syndrome is a condition in which the individual

Biology
1 answer:
djverab [1.8K]3 years ago
4 0
Has one extra chromosome in each cell (i.e 47 instead of 4.6). This is caused by one of the cell divisions during the formation of sex cells. Basically, the 21st chromosome ends up with 3 chromatids instead of 2. This is also why down syndrome is called trisomy 21.
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Describe, in detail, the journey of a sperm from start to finish! <br><br>Please :D
ioda

Answer:

Explanation:

The sperm reproduction startes in the testicles.Sperm are produced in the testicles and develop to maturity while traveling from the seminiferous tubules through the epididymis into the vas deferens. As a male and female have sexual intercourse their are millions of sperms released which travel  from the seminiferous tubules through the epididymis into the vas deferens as that happens the sperm enters throught the partner from here it takes its journey to the egg using ts tail to swim the first sperm to reaches the egg then uses the  acrosome, which is a specialised Lysosome that releases enzymes so that the Sperm Cell can penetrate the Ovum Coat of the Egg.It breaks through and forms a baby.

Hope this helps

5 0
4 years ago
An original DNA strand has the following base sequence:
SVEN [57.7K]
The base sequence that would be produced through DNA replication would be UGCA. RNA contains three of these bases - (A),(C), and (G) but not (T). Uracil (U) is found in its place and complements adenine (A) instead. I hope my answer has come to your help. God bless and have a nice day ahead!
4 0
3 years ago
Read 2 more answers
Which of the following is marked by the appearance of organisms with hard parts?
My name is Ann [436]

Answer:

a

Explanation:

bace i have done thos test

8 0
3 years ago
HELP ASAP I WILL GIVE BRAINLIST
adelina 88 [10]

Answer:

1) CO₂

2) 0.2551 g

Explanation:

The balanced reactions are:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

MgCO₃ + 2HCl → MgCl₂ + H₂O + CO₂

1) The gas produced is CO₂.

2) Calculate mass of CaCO₃:

(0.5236 g) (0.4230) = 0.2215 g CaCO₃

Convert to moles:

(0.2215 g CaCO₃) (1 mol / 100.1 g) = 0.002213 mol CaCO₃

Find moles of CaCO₃:

(0.002213 mol CaCO₃) (1 mol CO₂ / mol CaCO₃) = 0.002213 mol CO₂

Convert to mass:

(0.002213 mol CO₂) (44.01 g / mol) = 0.09738 g CO₂

Calculate mass of MgCO₃:

(0.5236 g) (0.5770) = 0.3021 g MgCO₃

Convert to moles:

(0.3021 g MgCO₃) (1 mol / 84.31 g) = 0.003583 mol MgCO₃

Find moles of MgCO₃:

(0.003583 mol MgCO₃) (1 mol CO₂ / mol MgCO₃) = 0.003583 mol CO₂

Convert to mass:

(0.003583 mol CO₂) (44.01 g / mol) = 0.1577 g CO₂

Total mass of CO₂:

0.09738 g CO₂ + 0.1577 g CO₂ = 0.2551 g CO₂

8 0
3 years ago
MRNA Molecule<br> AUGAACCAUUCAGUAUGG<br><br> what is the Amino Acid
Vinil7 [7]

Answer:

amino acids are organic compunds.....

6 0
3 years ago
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