a. The thick rod-like structures present inside the nucleus of a dividing cell are called Chromosomes.

b. The ductless glands which pour their secretions into blood are known as Endocrine glands.

c. The characters which distinguish a male from a female are called Sexual dimorphism. This can include differences in size, color, markings, and may also include behavioral differences.

d. The chromosomes which determine the sex of an individual are called Sex chromosomes. In humans, these are the X and Y chromosomes.

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a. The thick rod-like structures present inside the nucleus of a dividing cell are called Chromosomes.

b. The ductless glands which pour their secretions into blood are known as Endocrine glands.

c. The characters which distinguish a male from a female are called Sexual dimorphism. This can include differences in size, color, markings, and may also include behavioral differences.

d. The chromosomes which determine the sex of an individual are called Sex chromosomes. In humans, these are the X and Y chromosomes.

Knowee AI · Accepted Answer

a. The thick rod-like structures present inside the nucleus of a dividing cell are called Chromosomes.

b. The ductless glands which pour their secretions into blood are known as Endocrine glands.

c. The characters which distinguish a male from a female are called Sexual dimorphism. This can include differences in size, color, markings, and may also include behavioral differences.

d. The chromosomes which determine the sex of an individual are called Sex chromosomes. In humans, these are the X and Y chromosomes.

Name the following:a. Thick rod - like structures present inside the nucleus of a dividing cell.b. The ductless glands which pour their secretions into blood.c. The characters which distinguish a male from a female.d. Chromosomes which determine the sex of an individua

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