bio human breeding Flashcards
xx
female
xy
male
the egg contains only a male y factor
false
the sperm can contain a male y factor or a female x factor
true
when an x factor sperm joins with an x factor egg to give xx, the baby will be a girl
true
when a y factor sperm joins with an x factor egg to give xy, the baby will be a girl
false
the male sex cell is called a ?
sperm
the female sex cell is called a ?
egg
selective breeding is ?
find what you want-mix with another breed- mix again- then do it until you get what you want
discontinuous variation
it can only be one number
continuous variation
it can be any number in a range
genetic variation
that you have got from your parents DNA
environmental variation
everything around you is changing your body
chromosome
humans have this in every cell in the body
identical-same sex
I egg & I sperm-DNA the same
