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With reference to the chromosome, consider the following statements:
- It is a thread-like structure located inside the nucleus of animal and plant cells.
- In humans, males have X and X chromosomes and females have X and Y chromosomes.
Which of the statements given above is/are correct?
- a)1 Only
- b)2 Only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
With reference to the chromosome, consider the following statements: I...
Chromosomes: Structure and Function
Chromosomes are thread-like structures that are located inside the nucleus of animal and plant cells. They play a crucial role in the inheritance of genetic information and the transmission of traits from one generation to another. Let's explore the statements given in the question and understand why option A is the correct answer.
Statement 1: It is a thread-like structure located inside the nucleus of animal and plant cells.
This statement is correct. Chromosomes are thread-like structures made up of DNA and proteins. They are found inside the nucleus of animal and plant cells. Each chromosome consists of a single molecule of DNA tightly coiled around proteins called histones. The DNA in chromosomes carries the genetic information that determines the traits and characteristics of an organism.
Statement 2: In humans, males have X and X chromosomes and females have X and Y chromosomes.
This statement is incorrect. In humans, males have one X and one Y chromosome, while females have two X chromosomes. The combination of sex chromosomes determines the sex of an individual. Males have an XY chromosome pair, and females have an XX chromosome pair.
Sex Chromosomes and Sex Determination
The sex chromosomes determine the sex of an individual. In humans, there are two types of sex chromosomes: X and Y. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). During fertilization, the father can contribute either an X or a Y chromosome, while the mother always contributes an X chromosome. If the sperm carries an X chromosome, the resulting zygote will develop into a female (XX). If the sperm carries a Y chromosome, the zygote will develop into a male (XY).
Conclusion
In conclusion, statement 1 is correct as chromosomes are indeed thread-like structures located inside the nucleus of animal and plant cells. However, statement 2 is incorrect as males have XY chromosomes and females have XX chromosomes. Therefore, the correct answer is option A: 1 Only.
Chromosomes are thread-like structures that are located inside the nucleus of animal and plant cells. They play a crucial role in the inheritance of genetic information and the transmission of traits from one generation to another. Let's explore the statements given in the question and understand why option A is the correct answer.
Statement 1: It is a thread-like structure located inside the nucleus of animal and plant cells.
This statement is correct. Chromosomes are thread-like structures made up of DNA and proteins. They are found inside the nucleus of animal and plant cells. Each chromosome consists of a single molecule of DNA tightly coiled around proteins called histones. The DNA in chromosomes carries the genetic information that determines the traits and characteristics of an organism.
Statement 2: In humans, males have X and X chromosomes and females have X and Y chromosomes.
This statement is incorrect. In humans, males have one X and one Y chromosome, while females have two X chromosomes. The combination of sex chromosomes determines the sex of an individual. Males have an XY chromosome pair, and females have an XX chromosome pair.
Sex Chromosomes and Sex Determination
The sex chromosomes determine the sex of an individual. In humans, there are two types of sex chromosomes: X and Y. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). During fertilization, the father can contribute either an X or a Y chromosome, while the mother always contributes an X chromosome. If the sperm carries an X chromosome, the resulting zygote will develop into a female (XX). If the sperm carries a Y chromosome, the zygote will develop into a male (XY).
Conclusion
In conclusion, statement 1 is correct as chromosomes are indeed thread-like structures located inside the nucleus of animal and plant cells. However, statement 2 is incorrect as males have XY chromosomes and females have XX chromosomes. Therefore, the correct answer is option A: 1 Only.
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With reference to the chromosome, consider the following statements: I...
Recently, researchers have discovered that the Y chromosome possesses genes linked to ageing and lifespan regulation.
- The Chromosome is a thread-like structure located inside the nucleus of animal and plant cells.
- Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
- It is passed from parents to offspring.
- DNA contains the specific instructions that make each type of living creature unique.
- In humans, in addition to the 22 pairs of chromosomes in each, we have a pair of sex chromosomes called X and Y.
- All biological males have X and Y chromosomes and all biological females have two X chromosomes.
- The y chromosome known as the “master of maleness,” determines the biological male sex and carries genes that play a role in sex determination.
Hence only statement 1 is correct.
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With reference to the chromosome, consider the following statements: It is a thread-like structure located inside the nucleus of animal and plant cells. In humans, males have X and X chromosomes and females have X and Y chromosomes.Which of the statements given above is/are correct?a)1 Onlyb)2 Onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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