Question

1. If the genotype ratio of the offspring F1 generation are 1 RR : 2 Rr: 1 rr, the genotpes of the P generation are:

1. RR x Rr
2. Rr x rr
3. RR x rr
4. RR x RR

2. Cell division by meiosis results in

1. 2 haploid cells
2. 4 diploid cells
3. 1 daughter cell
4. 4 haploid cells

3. If an egg of a female rhino is 24 chromosomes, how many chromosomes would be found in a skin cell?

1. 24
2. 48
3. 6
4. 46

4. DNA polymerase is used for

1. Forming DNA from the mRNA
2. Holding together the two strands into one DNA molecule
3. Creating polymers of DNA by attaching nucleotides together
4. Gluing together DNA fragments

5. What is the process of transferring genetic information in RNA to a protein?

1. Mutation in the trait
2. All correct
3. A different amino acid
4. Cell death
5. Protein misfolding

Replace the word or words to make the sentence true

1. When small fragments of new DNA is formed, DNA polymerase glues the fragments together to complete the DNA strand
2. During interphase, cells are preparing to divide through cell growth, DNA transcription and building new macromolecules and organelles
3. The fragments of mRNA that are removed before it leaves the nucleus are called the exons
4. Meiosis results in the formation of somatic cells
5. DNA replication can happen anywhere within a eukaryotic cell
6. In translation, condons are identified from the tRNA
7. After meiosis, the number of total chromosomes in the humane gametes is 46
8. A region of mRNA that codes for a certain trait is called a gene
9. Because pea plants have open flowers, Mendel was able to control matings or crosses in his experiments
10. If a true breeding plant with red flowers is crossed with true breeding plant with white flowers and the offspring are plants with pink flower’s then red is completely dominate

Answer 1

1. The genotype of the P generation or parental generation would be Rr x Rr. This is a typical Mendel cross that give rise to 1:2:1. Please check the options as none of them is correct.

2. Meiosis is a reduction division , so the number of chromosomes are halved after the end of meiosis and one cell gives rise to four haploid daughter cells. It is normally done in gonads for the donation of eggs and sperm. In contrast , Mitotic cell division is equational division giving rise to two diploid daughter cells.

3. an egg has half the number of chromosome as a normal diploid cell. So the number of chromosomes in a skin cell would be 48.

4. DNA polymerase is used for creating polymers of DNA. It is very important enzyme used in DNA replication where a new DNA strand is formed. DNA polymerase catalyse the formation of phosphodiester bonds between two nucleotides.

5, the process of transferring genetic information from RNA to a protein is called translation. As the name suggests the information is being translated from nucleotides to peptides, it is carried forward by ribosomes and several other enzymes.

please clarify the options given for this question as it does not make any sense. Write it in the comment section and I will answer that part too.

1. When small fragments of new DNA is formed, DNA ligase glues the fragments together to complete the DNA strand
2. During interphase, cells are preparing to divide through cell growth, DNA transcription and building new macromolecules and organelles( This statement is true, cells grow and prepare to divide during interphase)
3. The fragments of mRNA that are removed before it leaves the nucleus are called the introns
4. Meiosis results in the formation of germ cells
5. DNA replication can happen in the nucleus within a eukaryotic cell
6. In translation,codon are identified from the tRNA. ( this is also true as tRNA binds with mRNA through their anticodon loop and recognises a particular codon)
7. After meiosis, the number of total chromosomes in the humane gametes is 23
8. A region of DNA that codes for a certain trait is called a gene
9. Because pea plants have open flowers, Mendel was able to control matings or crosses in his experiments.( this was also one of the reason for the success of Mendels experiment)
10. If a true breeding plant with red flowers is crossed with true breeding plant with white flowers and the offspring are plants with pink flower’s then red incompletely dominate