Biopedia: Adapted Article from Undergrad Science Journal

Adam and Eve, Ask and Embla, Deucalion and Pyrrha... The cultures of the world seemingly love the idea of humanity descending from two founders. While this notion may not be in line with scientific thought, there are two individuals who everyone can trace either maternal or paternal ancestry to. Say hello to mitochondrial Eve and Y-chromosomal Adam...

Sources for this episode:

 
 * Berta, P., Hawkins, J. R., Sinclair, A. H., Taylor, A., Griffiths, B. L., Goodfellow, P. N. and Fellous, M. (1990), Genetic evidence equating SRY and the testis-determining factor. Nature 348: 448- 450.

 
 * Callaway, E. (2013), Nature News, Genetic Adam and Eve did not too far apart in time (online). (Accessed 18/10/2020).

 
 * Chan, E. K. F., Timmermann, A., Baldi, B. F., Moore, A. E., Lyons, R. J., Lee, S.-S., Kalsbeek, A. M. F., Petersen, D. C., Rautenbach, H., Förtsch, H. E. A., Bornman, M. S. R. and Hayes, V. M. (2019), Human origins in a southern African palaeo-wetland and first migrations. Nature 575: 185- 189.

 
 * Chiaroni, J., Underhill, P. A. and Cavalli-Sforza, L. L. (2009), Y chromosome diversity, human expansion, drift and cultural evolution. Proceedings of the National Academy of Sciences of the United States of America 190(48): 20174- 20179.

  
 * Fleischmann, T. (2019), The Norse Creation of the Cosmos. MFA, Salem Press Encyclopedia of Literature.

  
 * Fry, S. (2017), Mythos: The Greek Myths Retold. London: Michael Joseph Ltd (part of Penguin).

  
 * Ingman, M., Kaessmann, H., Pääbo, S. and Gyllensten, U. (2000), Mitochondrial genome variation and the origin of modern humans. Nature 408: 708- 713.

  
 * Nass, M. M. K. and Nass, S. (1963), Intramitochondrial fibers with DNA characteristics. The Journal of Cell Biology 10: 593- 611.

  
 * Sykes, B. (2001), The Seven Daughters of Eve. London: Corgi Books (part of the Random House Group Ltd.

  
 * Thain, M. and Hickman, M. (2004), The Penguin dictionary of biology, 11th edition, London, Penguin Books Ltd.

  
 * Author unknown (2010), Holy Bible: International Children's Bible (New Century Version). Milton Keynes: Authentic Media Limited.

106- Mitochondrial Eve and Y-Chromosomal Adam

Biopedia

Tracing Mitochondrial Eve and Y-Chromosomal Adam in Human Evolution

Tracing Human Migration: A Study of DNA Fragments and Founding Populations

Possible Contemporaneity of 'Adam' and 'Eve' Genetic Origins?

Happy seventh Darwin Day! Today on the podcast, we are going to examine the family tree of Charles Robert Darwin. Let's explore more than ten generations of Darwins, starting all the way back in the 16th century with William Darwin Sr.

Sources for this episode:

TBA

Darwin Day 2026- The Ancestry of Charles Darwin

Biology is a fascinating subject which is well worth exploring. Its scope stretches from individual DNA strands and viruses to blue whales, metapopulations and the biosphere. We will shine the spotlight on a different biological concept in every episode. Topics I've covered in the past include the origins of cell theory, Dollo's law and the Anthropocene; however, there is still plenty more to discover. Our focus will range from the very smallest scales to the very largest; from virions to the Gaia hypothesis. So come and explore the fascinating world of biology, one episode at a time!

A silly question today- if you were to add together all of the X chromosomes of all of the people in the world, what would their total mass be? To answer this, we are going to have to estimate the mass of an X chromosome, examine how many cells are in a human body, and just how many people there are in the world...

Sources for this episode:

 * Bhartiya, A., Batey, D., Cipiccia, S., Shi, X., Rau, C., Botchway, S., Yusuf, M. and Robinson, I. K. (2021), X-ray Phytography Imaging of Human Chromosomes after Low-Dose Irradiation. Chromosome Research 29: 107-126.

 * Ross, M. T., et al. (2005), The DNA sequence of the human X chromosome. Nature 434: 325-337.

 * Sender, R., Fuchs, S. and Milo, R. (2016), Revised Estimates for the Number of Human and Bacteria Cells in the Body. PLoS Biology 14(8): e1002533.

 * Tartaglia, N., Cordeiro, L., Howell, S., Wilson, R. and Janusz, J. (2010), The Spectrum of the Behavioural Phenotype in Boys and Adolescents 47,XXY (Klinefelter Syndrome). Pediatric Endocrinology Reviews 8(1): 151-159.

 * Author unknown, Bionumbers (date unknown), Mass of X and Y chromosomes (online) (Accessed 14/12/2025).

 * Author unknown, Worldometer, (date unknown), World Population Clock (online) (Accessed 14/12/2025).

 * Author unknown, UNICEF (date unknown), How many children are there in the world? (online) (Accessed 14/12/2025).

117- Total Mass of Humanity's X Chromosomes

Generation Beta is, according to futurist Mark McCrindle, just starting to appear in the world. So, today, let's examine the generations that have been given a label in societal consciousness since the Lost Generation all the way back in the late 1800s.

Sources for this episode:

TBA

116- Generations

Today, we are going to examine a paper studying the impact both age at first pregnancy and the interval between pregnancies has on the probability of various negative outcomes associated with childbirth.

Sources for this episode:

TBA

115- Pregnancy Outcomes and Interpregnancy Intervals

Charles Darwin makes his way south from Rio de Janeiro to Maldonaldo and the south of South America. Along the way, he witnesses some local activities and has time to show off technological marvels to the locals.

NOTE: I have found out since recording that St Elmo's light or fire is a weather phenomenon in which plasma appears around anything with a structure like a rod in a vehicle, such as the mast of a ship or the wing of a plane (St. Elmo's fire Wikipedia 04/11/2025). I have also discovered that $2 in 1832 money is worth $75.34 in 2025 money ($2 in 1832 → 2025 | Inflation Calculator 04/11/2025).

Sources for this episode:

TBA

114- Voyage of the Beagle Part III

In a sort of unofficial Part II to our discussion in episode 112, we are going to examine the data from the 1790 US census focussed on the towns of Danbury and Brookfield in Fairfield County, Connecticut. We will be using the data for each household to answer two questions- does the ratio between males and females deviate significantly from 50:50? And what is the average family size?

Sources for this episode:

TBA

113- Sex Ratios and Family Size in the 1790 US Census

**Summary**: The podcast delves into the enduring legacy of ancient origin stories, focusing on Adam and Eve, in the realm of genetics. Mitochondrial Eve, the matrilineal ancestor from whom all humans today inherited their mitochondrial DNA, is estimated to have lived around 200,000 years ago in Africa. This mitochondrial DNA, passed down through maternal lines, has evolved at a constant rate, making it a valuable tool for tracing human evolution. Similarly, Y-chromosomal Adam, the patrilineal ancestor of all humans alive today, is believed to have lived around the same time, although estimates vary. Both mitochondrial DNA and Y-chromosomes provide insights into human migration patterns, with studies suggesting a single exodus from Africa. Despite the biblical connotations, these figures are purely genetic constructs, their stories intertwined only in our collective imagination.

106- Mitochondrial Eve and Y-Chromosomal Adam

Ody's Digest

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