QuestenaUn entraînement qui indique quoi revoir ensuite
RechercheCréer un test
Question 4

How many chromosomes does a normal human body cell contain, and how are they arranged?

  1. 23 chromosomes, arranged as 23 pairs
  2. 46 chromosomes, arranged as 23 pairsBonne réponse
  3. 46 chromosomes, arranged as 46 pairs
  4. 23 chromosomes, none of them paired

Explication

A body cell holds two matching sets, so the count comes to 46 and those chromosomes line up as 23 matching pairs. Quoting 23 as the total mixes up the number of pairs with the number of chromosomes, because every pair is made of two separate chromosomes.

Continuer avec ce test

Commencer l’entraînement
Comprendre ce thème (≈5 min)Retour au test
Question 4: How many chromosomes does a normal human body cell contain,… · Genetics Basics · Questena