Sex Determination Flashcards
1
Q
What is environmental sex determination?
A
The environment determines the sex of the organism
For example: sea turtles and egg temp (warm = male, cool = female)
2
Q
What is sex determination on a single autosomal gene?
A
A pair of alleles will determine the sex
For example: M/m = male and m/m = female in asparagus
3
Q
What is haplodiploid sex determination?
A
One sex will be diploid and the other will be haploid
4
Q
What is haplodiploid sex determination like in bees?
A
The diploid queen bee will mate with the haploid male drone. Fertilized eggs will become female worker bees and unfertilized eggs will become male drones.
5
Q
What types of mammals use XY chromosomes?
A
Placentals and marsupials
6
Q
What are Z and W sex chromosomes?
A
Z/Z = male Z/W = female
