3? I think. like if you think about for example hair, let's say someone's mom is blonde and the rest of her family is also blonde and their dad is brunette but their dad's mom had red hair there would still be a chance for the potential child to have red, blonde, or brown hair. I'm not positive this is correct but I hope it helps.
Answer:
He should get his mitochondrial haplotype sequenced, given the genetic variation in mitochondrial sequences compared to Y chromosomes.
Explanation:
- Mitochondrial DNA haplotypes are specific regions of mitochondrial DNA that cluster with other mitochondrial sequences to show the phylogenetic origins of maternal lineages.
- Mitochondrial DNA haplotypes are associated with a range of phenotypes and disease.
- Mitochondrial DNA contains 37 genes, all of which are essential for normal mitochondrial function.
- Thirteen of these genes provide instructions for making enzymes involved in oxidative phosphorylation.
Answer:
- helicase - breaks H-bonds between bases; binds at the replication fork
- topoisomerase - breaks covalent bonds in DNA backbone; binds ahead of the replication fork
- single-strand binding - prevents H-bonds between bases; binds after the replication fork
Explanation:
As DNA replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two component strands. This unwinding and separating of the DNA requires three different types of proteins:
- helicase - breaks H-bonds between bases; binds at the replication fork
- topoisomerase - breaks covalent bonds in DNA backbone; binds ahead of the replication fork
- single-strand binding - prevents H-bonds between bases; binds after the replication fork
Answer:
The correct answer will be option-E
Explanation:
The structure of DNA revealed by Watson and Crick showed that Two strands of DNA are present in the intertwined state forming helix representing DNA as a double helix.
Each strand of DNA is made up of the monomer unit of DNA called nucleotide where each nucleotide binds to another nucleotide through weak covalent bond called phosphodiester bond.
The phosphodiester bond is formed between the 3’-OH group of one nucleotide to 5’ phosphate group of another nucleotide. In this way, the phosphate-sugar molecule forms the backbone of the DNA molecule.
Thus, option-E is the correct answer