Meiosis Flashcards
1
Q
What is a mutation that causes an increase in chromosomes
A
Non disjunctional
- occurs in meiosis
- chronometer do not fully separate
2
Q
Anther way other than independent segregation and crossing over that creates genetic diversity
A
Random fertilisation
New allele combinations
3
Q
Why might a offspring be sterile
A
Too many set of chomosomes
Chromosomes not separated
No meiosis
4
Q
Positive effect of gene mutations
A
Change polypeptide into a positively named protein
More reproductive success
5
Q
E scribe the process of crossing over
A
Homologous pairs of chromosmes associate
Chiasmata form
Alleles are exchanged
Producing new combinations of alleles
6
Q
Explain how chromosomes numbers have have in meiosis
A
Homologous chromosomes
One of each air goes into each daughter cell
