Genetics

The gene responsible for -thalassemia is located on the 11th chromosome. It is a genetic disorder that is inherited in an autosomal recessive manner, meaning both copies of the gene, one from each parent, must be mutated for the individual to exhibit the disease.

Step 1: Understanding the Question.
The question asks about the analysis related to Mendel's laws of inheritance.

Step 2: Analyzing the Options.
(A) Sutton and Boveri: Correct — Sutton and Boveri's chromosome theory was one of the key works supporting Mendel's laws, as they showed that genes are located on chromosomes.
(B) Jannus Law: This is not a recognized law related to Mendel's work.
(C) Monohybrid Cross: A monohybrid cross is an example of Mendel's work, but this is a type of experiment, not an analysis.
(D) E. coli, Sutton and Sherman's work: This is irrelevant, as E. coli and Sutton & Sherman are not directly connected to Mendel's laws.

Step 3: Conclusion.
The correct answer is (A) Sutton and Boveri, as their work directly relates to Mendel's laws.

Step 1: Understanding the Question.
The question is about the total number of DNA bases in the human genome.

Step 2: Analyzing the Options.
(A) 1.4 billion: This is incorrect, as the total number of bases is much higher.
(B) 3164.7 million: This is incorrect, as this is a rough estimate, but the actual number is around 6 billion bases.
(C) 6 x 10 : Correct — The human genome consists of approximately 6 billion base pairs.
(D) 3 x 10 : This is too low compared to the actual value.

Step 3: Conclusion.
The correct answer is (C) 6 x 10 , which represents the total number of DNA base pairs in the human genome.

Step 1: Understanding the Question.
This question asks about the diagram showing the gene structure and the term "UTR."

Step 2: Analyzing the Options.
(A) 5' UTR, 3' UTR: Correct — The UTRs are untranslated regions at the 5' and 3' ends of the mRNA transcript.
(B) 5' UTR, 3' UTR: This is the same as option A.
(C) Exons and Introns: These are parts of the gene, but they are not the untranslated regions.
(D) Both 5' and 3' UTR: This is a repeat of (A), but correctly represents both regions.

Step 3: Conclusion.
The correct answer is (B) 5' UTR, 3' UTR, as these are the regions present in the mRNA transcript.

Step 1: Understanding the Question.
This question involves calculating the number of hybrid offspring from a given number of parental hybrids, assuming a typical hybrid inheritance pattern.

Step 2: Analyzing the Options.
The problem suggests a standard hybridization pattern. In a 1:1 hybrid cross (assuming no other genetic variables), half of the offspring would be hybrid. Therefore, the total number of hybrid offspring is:

Step 3: Conclusion.
The correct answer is (B) 4000, as half of the offspring in a hybrid cross are typically hybrids.