Which of the following statements is incorrect about sex determination?
A female has two identical X-chromosomes and XY.
Statement 4 is incorrect — a female has two X-chromosomes (XX), not XX and XY.
In humans, males are XY and females are XX; the Y-chromosome determines maleness.
Statements 1, 2, 3 are factually correct about sex determination.
Hence, A female has two identical X-chromosomes and XY..
Which of the following correctly explains why life processes such as nutrition, respiration, transport and excretion are essential for living organisms?
Which molecule is immediately synthesized using energy released during cellular respiration in animal cells?
How does Paramecium ensure that food particles are directed to its intake spot?
Which product is commonly formed during anaerobic respiration in animals?
Amoeba, yeast, and hydra can reproduce even when only one parent organism is present. Which conclusion does this suggest about asexual reproduction?
How do autotrophs fulfill their carbon and energy requirements?
What movement in plants causes a tendril to circle and cling to an object?
Which of the following formations is the three carbon molecule formed during the breakdown of glucose?
The amount of energy released during aerobic respiration in animals is _____ that released during anaerobic respiration.
Which of the following environmental stimulus causes roots to grow away from itself?
Tooth decay starts when the pH of our mouth is_______.
Which hormone is secreted by the pituitary gland?
Gregor Johann Mendel came up with the theory of inheritance by studying:
Red algae are generally found in:
Amoeba, Paramecium and Bacteria undergo: