Mitochondrial DNA can be traced A. Through the patrilincal line B. Through the m
ID: 95933 • Letter: M
Question
Mitochondrial DNA can be traced A. Through the patrilincal line B. Through the matrilineal line C. Through mitosis D. Through meiosis E. All of the above Gametes A. are basic units of the DNA molecule composed of sugar B. can make copies of all other types of cells C. are also called zygotes D. transmit genetic information from parent to offspring E. are important structural components of the body Which of the following statements concerning RNA is false? A. It is double-stranded. B. It is single-stranded. C. It contains the base uracil instead of thymine. D. It is able to pass through the nuclear membrane. E. It is involved in the synthesis of proteins. Proteins consist of chains of A. Carbohydrates B. Lipids C. Amino acids D. Fatty acids at E. Other proteins How many chromosome pairs occur in a normal human somatic cell? A. 24 B. 22 C. 26 D. 25 E. 23 A person who is homozygous recessive at a locus has which of the following? A. a recessive alleExplanation / Answer
1) All of the above
Mitochondria DNA can be traced by all of the four mechanisms the number of daughter cells can be traced in mitosis and meiosis and parent and maternal mitochondrial DNA can be traced by matrilineal line, patrilincal line.
2) Transmits genetic information from parent to offspring
Gametes contain chromosomes which contains all the genetic information and which are reduced to half and passed on to the offspring’s.
3) RNA is Double stranded
RNA is single stranded which makes them stable and most of viruses contains genetic material as RNA as it is highly reactive as it relies on hybridization to be processed, transported, and eventually translated and for all these purposes it should be single stranded.
4) Amino acids
Amino acids are building blocks of proteins each proteins molecule contains long chain of amino acids
5) 23 Pair of chromosomes
Somatic cell is biological cell from which all developments takes place and development of organism occurs. Somatic cell forms by fusion of fusion of spermatozoon and an ovum forming zygote which contains 46 chromosomes that 23 pairs from each parent.
6) Two copies of recessive alleles
Homozygous recessive allele means a person has town recessive alleles derived from each parent which code for same phenotype
7) Mutation
Mutation is only source of any new genetic material in any population because changes in any nucleotides sequence give rise to new genes and are possible source of unique genetic material