17 INTO THE NETHER REGIONS Flashcards
(46 cards)
What did Mrs. Coolidge ask her guide during the Presidential visit to a farm?
How many times the rooster copulated daily.
What was the President’s inquiry about the rooster’s mating?
Same hen every time?
Who discovered chromosomes and when?
Heinrich Wilhelm Gottfried von Waldeyer-Hartz in the 1880s.
What are the sex chromosomes for females and males?
Females have two X chromosomes; males have one X and one Y chromosome.
What did Hermann Henking discover in 1891?
An aloof chromosome in fire wasps, which he named ‘X’.
Who discovered the Y chromosome and when?
Nettie Stevens in 1905.
What was Nettie Stevens’ significant insight about the Y chromosome?
It has a role in determining sex.
What was the professional background of Nettie Stevens before her scientific achievements?
She worked as a teacher and librarian.
What is the significance of the SRY gene?
It is the sex-determining region on the Y chromosome.
How many genes does the Y chromosome have compared to other chromosomes?
The Y chromosome has about seventy genes; other chromosomes can have up to two thousand.
What is the estimated time frame for the Y chromosome to potentially vanish?
In another 4.6 million years.
Fill in the blank: Many organisms, like geckos, have abandoned _______.
sex.
What reproductive method do geckos use?
Cloning through egg production.
What are the benefits of sexual reproduction?
- Variety * Safety * Resilience * Evolution
What does the word ‘pudendum’ mean?
The external genitals, particularly those of a woman.
What percentage of respondents reported infidelity in relationships according to various studies?
Between 20 percent and 70 percent.
What issue arises when survey respondents answer questions about sexual behavior?
They may provide alternative realities or inaccurate answers.
What was the median time for sex reported in Britain?
Nine minutes.
What is the average energy use per sexual session for men and women?
- Men: about 100 calories * Women: about 70 calories
What is often said about the genetic differences between men and women compared to those between humans and chimpanzees?
There are more genetic differences between men and women.
What percentage more fat do women carry compared to men?
About 50 percent more fat.
What health issues do women suffer from more frequently than men?
- Alzheimer’s disease * Autoimmune diseases
How do women metabolize alcohol compared to men?
Women metabolize alcohol differently, getting intoxicated more easily.
What anatomical feature do women uniquely possess that is crucial for mitochondrial inheritance?
Women are the sacred keepers of human mitochondria
Mitochondria are vital powerhouses of cells and are passed down only through mothers.