Dihybrid Cross Amoeba Sisters Video Recap
Amoeba Sisters Video Recap worksheet on Dihybrid Crosses using Mendelian genetics. Focuses on pea plant traits (color and texture), Punnett square practice, genotype/phenotype identification, and understanding inheritance probabilities.
Daniel Miller
Contributor
4.3
30
3 months ago
Preview (1 of 1)
Sign in to access the full document!
□(HYBRID CROSSES (MENDELtAN)A M O E B A SISTERS: VFDEO RECAP
Amoeba Sisters Video Recap: Dihybrid Crosses (Mendelian Inheritance]
Vocabulary practice! You probably have had enough of cats with our video. On t o peas! In pea plants, yellow peas (coded for
by a dominant allele Yj are dominant to green peas (requiring two recessive alleles y). Round peas [coded for by a dominant
allele R) are dominant t o wrinkly peas (requiring two recessive r alleles). These are actual pea plant traits, by t h e way!
For the following, p ease write in the genotype or phenotype. Some are filled i n foryou.
Gtnotypa Phinotyp*
YYRR Yellow, round
I'.nr.r. ____ Green, wrinkhrd
YyRr 2, yirllow round ____________
yyRR 3_ green round
yyRr 4 j r « " rou O
5-YYrr______ o r Tver Yellow, wrinkled
b. Or Green, round
7. Analieie is a form o f a gene. In the cross HhSs x hhss, h o w many
alleles does a kitten inherit from the mother?
8. How many a leles does a kitten inherit from the father?
9. Gamete which are sex cells, carry the alleles. Why must a gamete carry oneallele (represented by a letter) from each
gene? Meaning, why can t a gamete carry an "hh" instead o f a r "hs ' or ar "Hh‘ instead of a "US?1
EiKti « I U n r r d i it f i l i r o f ollvtat l o r fijcti t r a i t I h r cqg w i l l « r r y MW ropy of cJCh 4rd I hr sprri* w i l l fl'.VO
carry <wt one copy each t o irate a cwolete s e t f o r ferlizatUHi
The Dihybrid Problem Solve
Read the beginning part about pea plants again Bernard really likes growing peas i n his garden, but the peas he likes are
green. He also likes tnem t o have a wrinkled texture, because he thinks they look much more interesting that way. Please
work out a YyRr x YyRr (heterozygous cross) on the back o f this sheet or on another paperwhile showing all work-
10. After showing your work to use as support, what is the chance that Bernard will have pea plant offspring that match the
phenotype be is looking for I green, wrinkled)?
11. What is the phenotype ratio o f this heterozygous cross?
fyefloiy, round): (yellow, wrinkled): (green, roundJ . (green, wrinkled)
12. If Bernard did not receive any pea plants that were green and wrinkled i n actuality, would you know for sure that t h e
parent genotypes were incorrect? Why or why not?
r : . ’ flljn'. Mould n l / j - 6 chsnr r o f b r j n w r i n k l r d . ; 1 | i j u j t 4 p r a b i t h i l t r fflf f4cti
pl*?t out arm 1/lt i s iood er s
( 5 . Amoeba Sisters LLC
\ © AIL reserved
Amoeba Sisters Video Recap: Dihybrid Crosses (Mendelian Inheritance]
Vocabulary practice! You probably have had enough of cats with our video. On t o peas! In pea plants, yellow peas (coded for
by a dominant allele Yj are dominant to green peas (requiring two recessive alleles y). Round peas [coded for by a dominant
allele R) are dominant t o wrinkly peas (requiring two recessive r alleles). These are actual pea plant traits, by t h e way!
For the following, p ease write in the genotype or phenotype. Some are filled i n foryou.
Gtnotypa Phinotyp*
YYRR Yellow, round
I'.nr.r. ____ Green, wrinkhrd
YyRr 2, yirllow round ____________
yyRR 3_ green round
yyRr 4 j r « " rou O
5-YYrr______ o r Tver Yellow, wrinkled
b. Or Green, round
7. Analieie is a form o f a gene. In the cross HhSs x hhss, h o w many
alleles does a kitten inherit from the mother?
8. How many a leles does a kitten inherit from the father?
9. Gamete which are sex cells, carry the alleles. Why must a gamete carry oneallele (represented by a letter) from each
gene? Meaning, why can t a gamete carry an "hh" instead o f a r "hs ' or ar "Hh‘ instead of a "US?1
EiKti « I U n r r d i it f i l i r o f ollvtat l o r fijcti t r a i t I h r cqg w i l l « r r y MW ropy of cJCh 4rd I hr sprri* w i l l fl'.VO
carry <wt one copy each t o irate a cwolete s e t f o r ferlizatUHi
The Dihybrid Problem Solve
Read the beginning part about pea plants again Bernard really likes growing peas i n his garden, but the peas he likes are
green. He also likes tnem t o have a wrinkled texture, because he thinks they look much more interesting that way. Please
work out a YyRr x YyRr (heterozygous cross) on the back o f this sheet or on another paperwhile showing all work-
10. After showing your work to use as support, what is the chance that Bernard will have pea plant offspring that match the
phenotype be is looking for I green, wrinkled)?
11. What is the phenotype ratio o f this heterozygous cross?
fyefloiy, round): (yellow, wrinkled): (green, roundJ . (green, wrinkled)
12. If Bernard did not receive any pea plants that were green and wrinkled i n actuality, would you know for sure that t h e
parent genotypes were incorrect? Why or why not?
r : . ’ flljn'. Mould n l / j - 6 chsnr r o f b r j n w r i n k l r d . ; 1 | i j u j t 4 p r a b i t h i l t r fflf f4cti
pl*?t out arm 1/lt i s iood er s
( 5 . Amoeba Sisters LLC
\ © AIL reserved
Preview Mode
Sign in to access the full document!
100%