Answer:
The esophagus is a long tube that connects the mouth to the stomach
Answer:
Each step is based on genetic traits
Explanation:
so I think u can choose which one it is based on wht i said
Answer:
It indicates that core histone genes were present in the last common ancestor of yeasts, plants, and animals
Explanation:
Histones are highly basic proteins that can strongly interact with DNA, which is packaged into nucleosomes, the basic structural and functional unit of chromatin. Each nucleosome is composed of approximately 147 base pairs of DNA wrapped around a core of eight histone proteins (two copies of four types of histones H3, H4, H2A, H2B). These core histones are evolutionarily conserved across eukaryotic kingdoms in terms of sequence and structure. Therefore, DNA-packaging into nucleosomes is considered a constraint for the evolution of core histones. Moreover, the presence of conserved core histones in eukaryotic kingdoms (e.g., yeast, plant, and animal kingdoms) is strong evidence that histone-mediated DNA packaging was presumably present in the last common ancestor of eukaryotic genomes.
A person possessing one dominant allele and one recessive allele for a gene is said to be heterozygous for that trait because the alleles are different. ... A genetic trait may be of homozygous dominant or recessive or heterozygous.
