Mendel's Law of Segregation states that a diploid organism passes a randomly selected allele for a trait to its offspring, such that the offspring receives one allele from each parent.
Explanation:
A Male's testies includes two chromosomes which are x and y (sperms)
XX= female
XY= male
A female's ovaries also have 2 chromosomes but both are x.
Whichever sperm ( depending on the x and y) enters the eggs that's the gender of the baby. If a x sperm enters the egg first it's a girl because the girl egg already contains the x chromosome so it's a gir. If a y sperm enters the egg first then it's a boy.
I know this wasn't the question but hoped I helped you out a little bit more :)
The probability is 1/16 that a gamete will receive only paternal chromosomes. In life
cycles that alternate between haploid and diploid stages, fertilization doubles
the number of chromosomes per cell, The pairing of chromosomes along
their lengths , which is essential for crossing over is referred to as synapsis
<span>Mutations sometimes improve the chances of survival for an animal. But rather rarely. Advantageous mutations do happen, but neutral and harmful mutations are way more common. </span>
