whateverthisis8 whateverthisis8

24-11-2021
Biology

contestada

Down's syndrome occurs because of a(n)

missing sex chromosome

extra sex chromosome

additional 21st chromosome

additional 18th chromosome

Respuesta :

nahida5353 nahida5353

24-11-2021

Answer:

C.Additional 21st chromosome

Explanation:

Hope this helped :)

Answer Link

Otras preguntas

An example of a standard precaution includes

PLS help 44-9+77 divided by 8=

Drugs that are used to treat psychological or mental disorders are broadly referred to as _____ medications.

Which of the following types of land and topography will have the highest runoff coefficient? Gravel Grassland Forests Wetlands

In Hakea, the stomata are protected from direct exposure to the air by enlarged epidermal cells. In what environment do you think this adaptation is necessary?

What do you think the poem “The miracle of Morning” by Amanda Gorman overall theme/message?

Write each quadratic equation in general form. I need help direly

Why was Earth Day planned for April 22? A April 22 was Senator Nelson's birthday. B Most college students would be on spring break in April. C The weather was l

You find that the victim is not responsive, not breathing normally, and you've called 911. What is your next treatment?

Which values of x and y satisfy both equations below? y = 3x y = x + 16 A X= 8, y = 24 B x = 4, y = 20 CX = 4, y = 12 D x = 0, y = 0