Genetics Review Part 1 Question Preview (ID: 36703)


Genetics Review. TEACHERS: click here for quick copy question ID numbers.

(1) The different forms of a gene is known as a(n)
a) trait
b) allele
c) genotype
d) phenotype

(3) What did Gregor Mendel complete his studies on?
a) Dinosaurs
b) Hair Color
c) Pea Plants
d) Dogs

(5) Mendel crossed a green pea plant and a yellow pea plant. In the first generation, all the peas were green. Then he crossed the first generation and the yellow pea color showed back up. This implies that
a) yellow pea plants are dominant over green.
b) green pea plants are dominant over yellow.
c)
d)

(7) What is the purpose of a punnett square?
a) To predict the possible genotypes and phenotypes of offspring.
b) To find the genotypes of the parents.
c) To show which traits are dominant.
d)

(9) The physical appearance of an organism (for example, hair color) is known as
a) allele.
b) genotype.
c) homozygous.
d) phenotype.

(11) A purebred green pea plant is crossed with a purebred yellow pea plant. The result is the first generation all appearing green. If two offspring from this 1st generation are crossed, what would be the probable appearance of the 2nd generation
a) 100% Green, 0% Yellow
b) 75% Green, 25% Yellow
c) 50% Green, 50% Yellow
d) 25% Green, 75% Yellow

(13) Brown eyes are dominant to blue eyes. If there is a 100% chance that an individual will have brown eyes, what is the genotype of the parents?
a) BB x bb
b) BB x BB
c) BB x Bb
d) All of the above

(15) The allele that will mask or cover up the recessive allele, and ALWAYS show up if present is called the
a) dominant allele.
b) recessive allele.
c) genotype.
d) phenotype.

(17) What are the base pairing rules of DNA?
a) A - C, T - G
b) C-A, G-T
c) A-T, C-G
d)

(20) If one side of a DNA strand is AGTCCG, what would the complementary sequence on the other side be?
a) CATGGC
b) CCCTAA
c) TCACCC
d) TCAGGC

(22) What is the shape of DNA called?
a) Spiral
b) Double Helix
c) Triple Helix
d) Twisted ladder

(24) Where is DNA stored?
a) In the nucleus of prokaryotes.
b) In the cytoplasm of eukaryotes.
c) In the mitchondria eukaryotes.
d) In the nucleus of eukaryotes.

(26) Not having to find a mate, takes less time, and creates more offspring are advantages of which type of reproduction?
a) Asexual Reproduction
b) Sexual Reproduction
c)
d)

(28) As a result of asexual reproduction, the daughter cells are
a) different.
b) identical.
c)
d)

(30) A starfish breaking off one arm and regenerating a new starfish from this is an example of
a) Asexual Reproduction
b) Sexual Reproduction
c)
d)

(32) How many chromosomes are in the sex cells of humans?
a) 46
b) 43
c) 26
d) 23

(34) If a cell has 25 chromosomes, how many will it have after it undergoes mitosis.
a) 50
b) 25
c) 12
d) 30

(36) What does meiosis produce?
a) Liver Cells
b) Skin Cells
c) Sex Cells (sperm and egg)
d) Muscle Cells

(37) When humans breed organisms to produce a desired trait this is called
a) natural selection.
b) selective breeding.
c) mitosis.
d) meiosis.

(38) Why do farmers practice selective breeding?
a) To get prettier crops.
b) To produce a higher yield of crops.
c) To produce less desirable crops.
d)

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