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Worksheet #23 (up to lecture on 11/11)
1. What 3 very important things could Mendel conclude after he crossed true bred plants
in the parental generation (AA x aa) and got 100% purple and then crossed the Fl
generatio~ (Aa x Aa) and got 75% p~le and 25% white? c I /
\ ) ~ ~ ~ -<- ~ ~ u.. ~O*rJ (..A.II O~ ~
Z) t.{ ?~ $-0 ~~ ~ 6 vk~ c§1 -t~w e.-I2-L
'3) dl ~(b~ ~ ~
'F 2. T/F ~he\-e is a blending effect bec"ttt\se the white flower color reappeared in the !2
generatIon.
3. If a white plant is a result from breeding 2 pea plants what can we conclude about the
parental gener.ation's ~enotype? What can we conclu~e about the white plant's
genotype? 7~ ~ ~ re ~\J'-..Q- ~ ~ ~
~ I,..-) ~ ~ r ~+- ~ ~D- ~ (J-R- ( ~~ I ~etl-~ ~
4. A gamete has how many copies of each gene? Therefore how many copies ~~ssed
on to the next generation?
..-5. T IF A sample size of around five plants is sufficient for testing the genetics of l?ea , I)
+' plants. ~ d ~ ~ ~ '"'\- r-"./'] /}P /? h C?! ~().p .., , ~~
~ ~ \ ~~~ ""-n-J~ ,-~ .
\ .wasthecommontrendhesaw? J e ~ t:l.-Y\ av-e~ ~ .,3... ( p , p(~
~~ ~~ain ~~at the Law of Se~re,gation means. "'- ~~ lO-A oJ c;R nof\ b ~t ~
'F " ,c\Q..K- \~ l\l,ctAJd ~cl.Jl o ~Jl-p ~ ~ ~
8. If you see a purple plant can you know for~Ure~at ilie genotype 1S? Why or why ()
not? f.jo i + C--,V\J ~ ~ A A ° ""' A a blo ~ (!:J:-f""
':::;: hat~~d :!an=ow y~~ ~~
f~what kind of cross should we perform?
! 0. If we ha~e a purple plant with genotype A- what should we cross it :with to find out lif{ n
1tsgeno~e1SAAQrAa?Why? M b\c.. "-J.L ~ ~ CS'"\.,,~~
0- 1JOo./~-k. ~~ ~ ~ ~ ~ ~ ()-(-- .
11. Give an exam~e of a homozygous recessive~omo~g~us dominant, and a. ~ - A "
heterozygous dommant genotype. Y\..oY'V"O {riC:-~S5 -~~ ~ fdDrY\ -"
~/~ ':. A~
12. What kind of cross shoul4 :we qo if we(want to know whether one tra1! affects the
genotype of another trait? ru ~ b n c c"~ ~ I fl- ~ ~
13. What law says that the geno~e for one ~ait doff not affect the genotype fo]another
trait? L~ ~ ~~ ~~