Guided Readings

Question 1

What’s translocation?

Answer 1

translocation is an aberration in chromosome structure that causes a chromosome fragment to attach to a non homologous chromosome

Question 2

What’s diploidy?

Answer 2

diploidy is when recessive alleles are hidden and not expressed, thus even fatal alleles are kept in the gene pool.

Question 3

What’s gametic isolation?

Answer 3

gametic isolation is when the sperm can’t fertilize eggs because they can’t survive in the reproductive tract or can’t penetrate the egg’s membrane

Question 4

What’s reduced hybrid viability?

Answer 4

reduced hybrid viability is when the genes of different parent species interact in ways that impair the hybrid’s devlopment

Question 5

What’s hybrid breakdown?

Answer 5

Some first generation hybrids may be viable and fertile, but when they mate with each other, their offspring are feeble or sterile

Question 6

What’s gradualism?

Answer 6

Gradual change at a gradual rate

Question 7

What’s a homeobox?

Answer 7

a homeobox is a 180 nucleotide sequence which specifies an amino acid homeodomain.