1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kamila [148]
3 years ago
11

A normal man and normal woman marry. What is the chance that they will produce a male child with Down's syndrome?

Biology
1 answer:
nikitadnepr [17]3 years ago
8 0

Answer:

The chance of a normal couple having a child with down syndrome is 1 to 600 births.

Explanation:

Down syndrome is a genetic flaw that occurs when the fetus is being formed.

A human cell considered normal has 46 chromosomes, divided into 23 pairs. For some unknown reason, an error may occur at the beginning of embryonic development and an extra chromosome is created, which binds to par 21. The result is cells with 47 chromosomes. This causes the said syndrome.

It is important to know that this failure happens at random. It is nobody's responsibility. It has not been proven to date that lifestyle, actions during pregnancy, smoking, drinking, medicines, environmental factors or kinship between the couple can influence this occurrence. She is not contagious either. The likelihood of a normal couple having a child with the syndrome is approximately 1 to 600 births.

You might be interested in
Explain why the cell membrane is the brain of the cell, as opposed to the nucleus.
Juli2301 [7.4K]

Answer:

because it holds the information needed to conduct most of the cell's functions.

3 0
2 years ago
Read 2 more answers
17. Match the major types of cancer with the types of cells they occur in
Zina [86]
LolsbdgsbcgcsnnsjzkmcjMCk
7 0
3 years ago
Help with the top right please
MatroZZZ [7]
O2 is a Gas , we aspire it from the air
5 0
3 years ago
The 14 different species of finches in the galapagos islands originated from a single ancestral species. what is it about these
Daniel [21]
<span>These islands have different ecologies and most are not connected to each other by landmass. Therefore, the organism adapt to each of the different ecologies on their islands. These populations were physically separated due to lack of connection to each other and would not breed randomly. They therefore formed different species by allopatric speciation.</span>
8 0
2 years ago
Genes are segments of DNA that determine the phenotype of an individual. Pea colors can be yellow or green. When two plants that
telo118 [61]

The answer to question 1 is A.

The answer to question 2 is C.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which functional area of the brain is responsible for keeping the cortex alert and conscious and enhancing its excitability?
    10·1 answer
  • Consider the identical
    9·1 answer
  • The shock-absorbing pads between the vertebrae are formed of fibrocartilage are called
    9·1 answer
  • A friend says that the temperature increases as altitude increases because you're moving closer to the sun is this true explain
    8·1 answer
  • Why do you think that we find <br> trilobite fossil in the bottom layer only
    7·1 answer
  • 1-What is the modern periodic table?
    12·1 answer
  • Wybierz jedną z chorób układu wydalniczego i na podstawie podręcznika i dostępnych źródeł opiszcie ją podając: przyczyny choroby
    14·1 answer
  • What is a landfill? Check all that apply.​
    8·2 answers
  • Many birds migrate to warmer climates in the spring. Find two reasons why. Group of answer choices To get away from seasonal pre
    10·1 answer
  • What do muscle and bone cells have in common? What makes them function differently?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!