Q. Which of the following statements is true?
A. Chromosomes occur in pairs in higher plants and animals.
B. There are more chromosomes in a cell than there are genes.
C. All organisms have the same number of chromosomes.
D. A karyotype cannot determine if an organism is male or female.
Answer:
A karyotype cannot determine if an organism is male or female. Thus, the correct option is D.
<h3>
What is karyotype?</h3>
A person's entire set of chromosomes is known as their karyotype. The phrase can also refer to an image created in a lab showing a person's chromosomes separated from one cell and organized in numerical order. A karyotype can be used to check for chromosomal number or structural problems.
Males and females may have different karyotypes. For instance, human females have two X chromosomes while males have an X and a Y chromosome in their karyotype. Body (somatic) cells and egg and sperm cells have different karyotypes (gametes).
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Osmosis plays a major part in the movement of water in and out of cells.
Answer:
The correct answer is - the star is a medium-size star.
Explanation:
On the basis of the given information, we know that the color of the sun and the color of the observed or studied star by astronomer is similar and on the basis of this observation, he stated that the temperature and the size of the sun is also similar.
As we know the size of the sun is medium in comparison to other star and have less temperature to the other stars which means it is cooler than other star and has a medium size.
A cow grazes in a grassy meadow.
