Genome instability in mammalian embryos implications for genome editing, development, and evolution.

Area of Science:

• Developmental Biology
• Genetics
• Evolutionary Biology

Background:

• Genomic instability is a major cause of developmental failure and abnormalities in mammals, especially humans.
• Early embryonic development is highly sensitive to genetic integrity.

Purpose of the Study:

• To review and explore the significance of genome instability in early mammalian embryos across various species.
• To discuss the impact of genomic instability on embryonic development, gene editing applications, and evolutionary implications.

Main Methods:

• Comparative review of genomic instability in early embryos of humans, rhesus macaques, mice, bovines, equines, and porcine.
• Analysis of chromosomal aberrations, aneuploidy, and developmental failure patterns.

Main Results:

• Most mammalian species studied (excluding mice) exhibit frequent chromosomal aberrations and aneuploidy, leading to developmental failure.
• Genome instability significantly impacts embryonic development across diverse mammalian lineages.

Conclusions:

• Understanding genome stability in mammalian embryos is crucial for insights into developmental genetics and evolutionary processes.
• Germline mutations and bottleneck effects in mammals warrant further investigation in comparison to lower vertebrates.