Class X

Which of the following can be called a characteristic?
  1. Plants can photosynthesis
  2. We have 2 eyes
  3. Mango tree is multicellular
  4. All
Human baby will be a female its 23rd chromosome pair is
  1. XX
  2. XY
  3. YY
  4. XYY
Which of the following can be called a characteristic?
  1. Plants can photosynthesis
  2. We have 2 eyes
  3. Mango tree is multicellular
  4. all of the above
Which of the following is not controlled by genes? 1. Weight of a person 2. Height of a person
  1. only 1
  2. only 2
  3. both1 and 2
  4. sometimes 1 and sometimes 2
Who have a perfect pair of sex chromosomes?
  1. Girls only
  2. Boys only
  3. Both girls and boys
  4. It depends on many other factors
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