punnet squares + blood

Question 1

Rh factor

Answer 1

• type of protein on the surface of RBC
• positive if have, neg. if not

Question 2

Rh disease

Answer 2

• when Rh neg. mom has Rh pos. baby, the Rh antigens enter mom
• then mom makes antibodies against Rh, causing hemolytic anemia by destroying fetal RBC

Question 3

how to prevent Rh sensitization

Answer 3

• blood test (antibody screen) detects Rh antibodies
• Rh immunoglobulin (made of donated blood) targets Rh pos. cells and prevents antibody production
• at 28th week and 72 hrs after

Question 4

codominance

Answer 4

• both are expressed, not blend
• use superscripts, variable for trait
• when doing genotype, write out the letters

Question 5

incomplete dominance

Answer 5

• results in blend (third allele formed)
• use superscripts, variable for trait
• when doing genotype, write out the letters

Question 6

mendel’s law of segregation

Answer 6

• organisms inherit two copies of genes; one from each parent

Question 7

mendel’s conclusions

Answer 7

• traits are passed on as heredity units called “factors” - we call GENES
• for each trait (like flower colour) an organism carries TWO alleles
• one from each parent
  bc parents only donate ONE copy of each gene in their gametes (happens during meiosis)

Question 8

pedigrees used for

Answer 8

• passing of alleles
• patterns of transmission of trait