Ch 26

Question 1

syncytial

Answer 1

means doesn’t have their own cell yet - all floating around in the same cytoplasm

Question 2

blastoderm

Answer 2

in their own cells now

Question 3

blastoderm

Answer 3

in their own cells now

Question 4

bicoid+ what happens if an affected females mates with a normal male?

Answer 4

still affected (only the mother’s matter)

Question 5

bicoid+ what happens if an affected females mates with a normal male?

Answer 5

still affected (only the mother’s matter)

Question 6

how can researchers determine location of gene products?

Answer 6

in situ hybridization

immunostaining

Question 7

classes of segmentation genes (3)

Answer 7

gap genes
pair-rule genes
segment-polarity genes

Question 8

classes of segmentation genes (3)

Answer 8

gap genes
pair-rule genes
segment-polarity genes

Question 9

Need to know details of the 2 clusters of drosophila homeotic genes

Answer 9

1) antennapedia complex
2) bithorax complex

both located on chromosome 3, but they’re not physically next to each other

Question 10

homeotic genes regulated by ___

Answer 10

• gap & pair-rule genes

- polycomb genes

Question 11

homeotic genes regulated by ___

Answer 11

• gap & pair-rule genes

- polycomb genes

Question 12

myogenic bHLH proteins

Answer 12

needed for muscle development

Question 13

most plant cells are totipotent (def)

Answer 13

have the ability to differentiate into cell type and produce an entire individual