Science GENETICS

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Science GENETICS
1.
2.
3.
4.
5.
6.
NAME_________________________________________DATE_________
The passing of physical characteristics from parents to offspring.
a.
Trait
b.
Genetics
c.
Heredity
d.
Hybrid
During protein synthesis, messenger RNA
a.
links one amino acid to another
b.
releases the completed protein chain
c.
provides a code from DNA in the nucleus
d.
carries amino acids to the ribosomes.
Mendel observed that the pea plant's ___________ were similar to those of their parents.
a.
Traits
b.
Genetics
c.
Heredity
d.
Hybrid
This allele in which a trait is masked whenever the dominant allele is present is called
a.
Weak
b.
Dominant
c.
Recessive
d.
Codominance
The different forms of a gene are called
a.
Alleles
b.
Chromosomes
c.
Phenotypes
d.
Genotypes
These are made up of many genes joined together like beads on a string.
a.
Genes
b.
Chromosomes
c.
DNA
d.
Cells
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Science GENETICS
7.
NAME_________________________________________DATE_________
When the alleles are neither dominant nor recessive it is called____________ as a result, both alleles
are expressed in the offspring.
8.
9.
a.
Hybrid
b.
Dominant
c.
Recessive
d.
Codominance
He is known as the father of Genetics because of his experimentation with peal plants and heredity.
a.
Carl A Punnett
b.
Walter Sutton
c.
Gregor Mendel
d.
Patrick Star
This is the process by which the number of chromosomes is reduced by half to form sex cells-- sperm
and eggs.
a.
Mitosis
b.
Meiosis
c.
Melleosis
d.
Mitochondria
10. A garden has 80 pea plants. Of the plants, 20 have short stems and 60 have tall stems. What
percentage of the plants have short stems? What percentage have tall stems?
a.
25% and 75%
b.
75% and 25%
c.
20% and 60%
d.
2% and 6%
11. This is an organisms genetic makeup or allele combination.
a.
Phenotype
b.
Genotype
c.
Homozygous
d.
Heterozygous
12. TRUE OR FALSE An organism's traits are controlled by the alleles in inherits from its parents. Some
alleles are dominant, while other alleles are recessive.
2
Science GENETICS
NAME_________________________________________DATE_________
13. _____________________ can cause a cell to produce an incorrect protein during protein synthesis.
As a result, the organism's trait, or phenotype, may be different from what it normally would have been.
This word also comes from a Latin word that means, "change".
14. ______________________ is a number that describes how likely it is that an event will occur.
15. Select the correct spelling of the vocabulary word
a.
Mieosis
b.
Meoisis
c.
Meiosis
16. This is an organism's physical appearance, or visible traits.
a.
Phenotype
b.
Genotype
c.
Homozygous
d.
Heterozygous
17. When an organism has two different alleles for a trait.
a.
Phenotype
b.
Genotype
c.
Homozygous
d.
Heterozygous
18. If the body cells of an organism has 10 chromosomes, then sex cells produced during meiosis have
a.
5 chromosomes
b.
10 chromosomes
c.
15 chromosomes
d.
20 chromosomes
19. Blue eyes is recessive. Brown eyes are dominate. Lucy has a dominant brown eye trait and a
recessive blue eye trait. Her husband has two dominate brown eye traits. Draw a Punnett Square and
select the correct answers for their offspring's possible traits.
a.
BB, BB, Bb, and Bb
b.
BB, BB , BB, and bb
c.
BB, Bb, Bb, and Bb
d.
BB, bb, Bb, and bb
3
Science GENETICS
NAME_________________________________________DATE_________
20. According to this ___________________________, genes are carried from parents to their offspring
on chromosomes.
a.
Chromosome theory of Inheritance
b.
Trait theory of Inheritance
c.
Punnett Theory of Dominance
d.
Meiosis
21. _____________________ is a chart that shows all the possible combination of alleles that can result
from a genetic cross.
22. When an organism has two identical alleles for a trait it is called a
a.
Phenotype
b.
Genotype
c.
Homozygous
d.
Heterozygous
23. This is an allele in which a trait always shows up when the allele is present.
a.
Hybrid
b.
Dominant
c.
Recessive
d.
Codominance
24. TRUE OR FALSE During protein meiosis, the cell uses information from a gene on a chromosome to
produce a specific protein
25. TRUE OR FALSE Messenger RNA copes the coded message from the DNA in the nucleus, and
carries the message to the ribosome in the cytoplasm.
26. TRUE OR FALSE Mutations in body cells do not affect sex cells. Only sex cells carry alleles to
offspring.
27. TRUE OR FALSE Transfer RNA carries amino acids to ribosomes & adds them to the growing protein
28. TRUE OR FALSE Probability is the likelihood that a particular event will occur.
29. TRUE OR FALSE In a genetic cross, the allele that each parent will pass on to its offspring is based on
probability.
30. TRUE OR FALSE The order of the nitrogen bases along a gene forms a genetic code that specifies
what type of protein will be produced.
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