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
alekssr [168]
2 years ago
8

Humans have 23 pairs of chromosome in every body cell. Even one extra chromosome causes death or serious disorders. For example,

an extra copy of chromosome 21 causes Down syndrome. Which of the following are affected in a human being with an extra chromosome? Choose the 3 items that apply.
Biology
1 answer:
tamaranim1 [39]2 years ago
3 0

Explanation:

In the majority of cases, the extra copy of chromosome 21 comes from the mother in the egg.

In a small percentage (less than 5%) of cases, the extra copy of chromosome 21 comes from the father through the sperm.

In the remaining cases, the error occurs after fertilization, as the embryo grows.

You might be interested in
The electron transport chain produces much more ATP than glycolysis or the Krebs Cycle but it needs them to happen in order to t
lyudmila [28]

Answer:

there is a link

Explanation:

glycolysis produces pyruvate which feeds into the krebs cycle

krebs cycle also generates redox agents(NADH and FADH2) needed in the etc

5 0
3 years ago
20 minutes of moderate cardiovascular exercise releases bdnf. <br> a. True <br> b. False
Sauron [17]
The answer is true letter a
7 0
3 years ago
A plants root system is which level or organization?
MaRussiya [10]

its B. Organ b/c the plants root are part of the plant

8 0
3 years ago
What is the treatment for Osteomyelitis?
Eduardwww [97]

Answer and Explanation:

Surgery to remove the bones that are infected or dead is the most common treatment for osteomyelitis. After the treatment eosteomyelitis. intravenous antibiotics are given.

the process of eosteomyelitis treatment is

  • Drain the infected area
  • After draining remove the the infected area that may be bone or tissue.
  • restore the blood flow to the bone.
  • remove any other objects if present
  • amputate the limb

3 0
3 years ago
Guys I need help!! with biology 1 I don’t understand what the independent and dependent is nor the what causes or what changes!
frozen [14]

Answer:

5) air temperature - corn sprouting time

6) sacks of fertilizer sold - algae growth

7) cars - pollution levels (sorry couldn't read the full problem, but you get it)

8) distance of flash light - size of illuminated area

9) number of answered questions - score of the final

10) minutes of exposure - birth defect rate

11) amount of vitamin A - weight fluctuation

12) fox population - rabbit population

Explanation:

So as the words speak for themselves, dependent variables are variables that aren't changed by outside factors unlike dependent variables which change based on an outside change. Knowing this, if you reread the problems you will be able to understand it a little bit more.

8 0
3 years ago
Other questions:
  • Binary fission occurs when a parent cell splits into _ identical daughter cells of the same size ?
    10·1 answer
  • In an experimental situation, a virus is injected into a rabbit and the rabbit makes antibodies against the viral antigen. These
    7·1 answer
  • How do isotopes of the same element differ from each other?
    14·1 answer
  • Why are plants so important?
    11·2 answers
  • Explain how burning of fossil fuels by humans affects the carbon cycle
    11·1 answer
  • The best explanation for all these offspring being female is that
    7·1 answer
  • The Earth is made up of 75% water. Sources such as oceans, lakes, and rivers have an important role in keeping Earth's surface i
    9·1 answer
  • How many mutated genes are in each cell
    5·1 answer
  • describe all of the possible phenotypes of the father's parents. Show the punnet square to support your awnser
    10·1 answer
  • in cat some are black , some are orange and some are calico (fur that is both black and orange) all calico cats are always femal
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!