checkpoints not additional assignments. ( gets you a great grade in schoo
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1. Workbook 1.1 (2 questions) 100%
2. which statement is true about recessive traits Recessive traits are ex-
? pressed when both alleles
are recessive.
3. replace X and Y with the correct answers x : genotype
x is the genetic makeup of an organism , y : phenotype
as determined by the alleles , while Y is the
observable form
4. Workbook 1.2 ( 2 questions) 100%
5. read the statement : there is a chance that any
When Mendel crossed a purple-flowered pea second-generation plant
plant with a white-flowered pea plant , the will be a white-flowered
offspring always gad purple flowers , when one .
Mendel crossed the offspring with each other
, the second-generation offspring had some
white-flowered plants .
what conclusion can be drawn from this ob-
servation ?
6. which statement defines heterozygous ? a genotype composed of
two different alleles
7. Checkpoint 1 (9 questions) 100%
8. some people have dimples ; other people do DD , Dd
not . Having dimples is dominant over not
having dimples .
if the alleles for having dimples is represent-
ed with the letter D , what allele combinations
can result in having dimples
9. which statement is true about model organ- they help scientists under-
isms ? stand biological processes
10.
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Read the statement : x : purple
When Mendel crossed a purple-flowered pea y : 75%
plant with a white-flowered pea plant , the off- z : 25%
spring were always X . When Mendel crossed
the offspring with each other , the distribution
was about Y purple and Z white . The more
experiments Mendel did with pea plants , the
closer they approached these percentages .
Which option correctly replaces X , Y , and Z
in the statement ?
11. A pea plant that is tall has a dominant trait - The genotype Tt always
. Which statements are true about the geno- results in a phenotype that
type / phenotype relationship of the plant ? is tall .
Select all that apply . - When the phenotype is
tall , the genotype can ei-
ther be TT or Tt .
12. What statement would be true according to The offspring of a tall par-
the theory of blending inheritance ? ent plant and a short par-
ent plant will all have a
height in the middle .
13. Mendel crossed a tall pea plant with a short Two factors affect the
pea plant . All the offspring in the first gener- height trait of pea plants .
ation were tall pea plants . One of the factors is domi-
How did Mendel explain why all the offspring nant over the other .
were tall pea plants ?
14. In some situations , when two purple-flow- The experiment would re-
ered pea plants reproduce , the offspring can sult in a plant with either
have purple or white flowers . When this ex- purple or white flowers .
periment is run repeatedly , it is discovered The conclusion would de-
that three-fourths of the offspring have pur- pend on this single result
ple flowers and one-fourth of the offspring and would not be accurate
have white flowers . .
What would happen if this experiment were
run only once ?
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checkpoints not additional assignments. ( gets you a great grade in schoo
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15. Which term defines a genotype composed of Homozygous
two identical alleles?
16. What statement is true about heterozygous Heterozygous organisms
organisms ? are more genetically di-
verse than homozygous or-
ganisms.
17. Lesson 2 Punnett Squares
18. Workbook 2.1 2 questions 100%
19. A type of insect can be red or black . Red all lowercase r
is the dominant trait and is represented by https://assets.learnosi-
a capital R . Identify the Punnett square that ty.com/organisa-
illustrates all offspring being homozygous re- tions/625/asset/me-
cessive for a trait . dia/1159902
20. Parent A is homozygous dominant for curly curly hair
hair , and Parent B is homozygous recessive
for straight hair .
What is the expected phenotype of the off-
spring ?
21. Workbook 2.2 2 questions 100%
22. What can be shown by a dihybrid cross ex- The inheritance of one trait
periment ? does not affect the chance
of inheriting another .
23. A dihybrid cross experiment produces off- 9:3:3:1
spring of four different types in the F2 gener-
ation . What is the predicted ratio of the four
phenotypes in the offspring ?
24. Checkpoint 2 8 questions 87.5 % 7/8
25. Which statement best describes a monohy- XXXWRONGXXX
brid cross ? a cross in which traits of
several different character-
, Biology B - For Primavera and Isucceedvhs ENTIRE CLASS workbooks an
checkpoints not additional assignments. ( gets you a great grade in schoo
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istics are studied
(i had no time to check for
the right answer sorry.)
26. Twenty-five percent of the possible offspring heterozygous
for a cross are homozygous dominant . What
genotype do each of the parents have ?
27. In pea plants , green seeds are dominant (Y) 100 percent
, and yellow seeds are recessive (y) . The
following Punnett square shows a cross for
seed color .
28. What is the ratio of tall offspring to short 3:1
offspring ?
29. What valuable information was gained from inheritance of one trait
Mendel's dihybrid crosses ? does not affect inheritance
Select all that apply . of another .
statistical and probability
methods can be used to
determine how likely an off-
spring is to inherit certain
traits .
30. Dihybrid cross experiments led Mendel to the law of independent as-
propose his law of independent assortment . sortment states that alle-
Which statement best describes this law ? les of different genes are
inherited independently of
each other .
31. Read the following statement . white flowers , short stem
A dihybrid cross experiment is carried out
in pea plants . The traits being observed are
flower color and stem length . In the F2 gen-
eration , 81 plants have purple flowers and
long stems , 27 plants have purple flowers
and short stems , 27 plants have white flow-
ers and long stems , and 3 plants have white