Mapping our Genes

01.
Name the following: The transmission of traits from parent to offspring.
02.
Fill in the Blank: Offsprings resemble their parents but yet there are many differences
between them. This resemblance and differences is the result of ______________.
03.
True or False: Mendel’s law of inheritance of traits: Father contribute genetic
material to the child.
04.
Fill in the Blank: _________ character is the one which masks or hides its recessive
partner.
05.
True or False: Round seed shape is a recessive trait in pea plant
06.
True or False: Attached earlobes is a dominant trait in human being
07.
Name the following: Crosses between plants involving only one pair of contrasting
character (trait)
08.
Fill in the Blank: The second ______ generation is represented as “F2 Generation”
09.
Name the following: The appearance of any detectable characteristic feature of an
individual like red or white flowers
10.
A cell is ____ when same gene is present on both chromosomes of the pair.
(a) Heterozygous
(b) Dihybrid
(c) Homozygous
(d) Monohybrid
11.
Name the following: Also called chequerboard diagram. This shows combination of
4 male and 4 female gametes
12.
A fragment of DNA that provides complete information about one protein.
(a) Double-helix
(b) Chromosome
(c) Gene
(d) RNA
13.
A cell is heterozygous when ____ genes are present on chromosomes of the same pair.
(a) Complimentary
(b) Same
(c) Different
(d) Similar
14.
Phenotypic ratio for Mendel’s Dihybrid Cross is ____
(a) 9 : 3 : 3 : 6
(b) 6 : 3 : 3 : 1
(c) 6 : 1 : 1 : 3
(d) 9 : 3 : 3 : 1
15.
In Mendel’s dihybrid Cross between Round-Yellow (RRYY) and Wrinkled-Green (rryy)
pea plants, the maximum numbers of offsprings are with gentotype ____
(a) rryy
(b) RrYy
(c) rrYy
(d) Rryy
16.
Fill in the Blank: In human beings, there are 46 chromosome or 23 pairs, out of
which 22 are ______ and 1 is a sex-chromosome
17.
True or False: Sex of an offspring is determined by mother.
18.
Rule of Nature: Those organisms which cannot adjust to their surrounding have no
right to _____
(a) Mate
(b) Grow
(c) Kill
(d) Survive
19.
Darwin’s Theory of Natural Selection: Survival for the ______
(a) Strongest
(b) Tallest
(c) Fittest
(d) Heaviest
20.
Fill in the Blank: Selection of variants by the environmental factors forms the
basis of ________ process
21.
Fill in the Blank: Embryo of different organisms in their early stages are similar,
suggesting common ancestry. This is ______ evidence
22.
In Mendel’s dihybrid Cross between Round-Yellow (RRYY) and Wrinkled-Green (rryy)
pea plants, the smallest numbers of offsprings are with gentotype ____ from among
the following
(a) RRYy
(b) rrYy
(c) Rryy
(d) rryy
23.
Fill in the Blank: Non-functional structures suggest common ancestry. Ex; tail-bone,
appendix, ear muscles, etc. These structures are called ________ structures
24.
Mutation is _____ change in genetic material of offsprings
(a) Gradual
(b) Continuous
(c) Drastic
(d) No
25.
True or False: Yellow pod colour is a dominant trait in pea plant
26.
The number of gametes in monohybrid cross (rr) and (RR) are ____
(a) 1
(b) 2
(c) 4
(d) 8
27.
Phenotypic ratio for Mendel’s Monohybrid Cross is ____
(a) 1 : 2 : 1
(b) 3 : 2
(c) 4 : 1
(d) 3 : 1
28.
Genotypic ratio for Mendel’s Monohybrid Cross is ____
(a) 1 : 2 : 1
(b) 9 : 3 : 3 : 1
(c) 1: 4 : 1
(d) 4 : 2 : 2 : 1
29.
True or False: Dark hair is a dominant trait in human beings
30.
Fill in the Blank: Members of a generation _________ the characters from the members
of the previous generation.

Answers:

01. Heredity
02. heredity
03. False { Both mother and father contribute equal quantity }
04. Dominant
05. False { Wrinkled shape is a recessive trait }
06. False { It is a recessive trait }
07. Monohybrid Crosses
08. Filial
09. Phenotype
10. (c) Homozygous
11. Punnett square
12. (c) Gene
13. (c) Different
14. (d) 9 : 3 : 3 : 1
15. (b) RrYy
16. autosomes
17. False { It is determined by father! }
18. (d) Survive
19. (c) Fittest
20. evolutionary
21. Embryological
22. (d) rryy
23. Vestigial
24. (c) Drastic
25. False { It is recessive trait }
26. (b) 2 { r and R }
27. (d) 3 : 1
28. (a) 1 : 2 : 1
29. True
30. Inherit

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