Chapter 3 Test Question Preview (ID: 49150)
Heredity And Genetics.
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A gene combination in which a mixture of traits shows is called
a) heredity
b) energy
c) matter
d) codominance
Traits that are inherited with sex chromosomes are
a) mutation traits
b) sex-linked traits
c) controlled traits
d) uncontrolled traits
A change in a gene is a
a) gene
b) trait
c) mutation
d) environment
Characteristics of an organism are called
a) traits
b) chemicals
c) chromosomes
d) DNA
An organism with two like genes for a trait is said to be (2 capital letters or 2 lower case letters)
a) heterozygous
b) homozygous
c) strong
d) blue eyed
A human body cell contains how many chromosomes?
a) 10
b) 23
c) 46
d) 40
How many chromosomes does a human egg or sperm carry?
a) 46
b) 13
c) 23
d) 20
Color blindness is
a) A sex linked disorder
b) Energy on the DNA strand
c) Heart disease
d) When extra oxygen gets into the body
A dominant gene usually shows itself over a
a) environmental factor
b) inherited trait
c) recessive gene
d) sex-linked trait
The process by which plants with desirable traits are crossed until a new variety of plant is developed is called
a) mutations
b) mass selection
c) recessive traits
d) meiosis
An organism receives chromosomes from
a) the environment
b) the atmosphere
c) its parents
d) mutations
The passing of traits from parents to offspring is called
a) heredity
b) environmental factors
c) DNA
d) chromosomes
In a strand of DNA Adenine (A) goes with Thymine (T) and Cytosine (C) goes with
a) cells
b) cytoplasm
c) guanine (G)
d) RNA
The field of biology that studies heredity is
a) duplication
b) genetics
c) reproduction
d) cell division
A pea plant with two tall genes is said to be
a) homozygous tall
b) heterozygous tall
c) recessive
d) karotype
A Punnett square shows combinations of genes and the possible outcomes show possible
a) DNA the organism might have
b) chromosomes the organism might have
c) traits the organism might have
d) hybrids the organism might have
A type of cell division that produces gametes is
a) replication
b) meiosis
c) heredity
d) codominance
A male gamete contains
a) two X chromosomes (XX)
b) one X and one Y chromosome (XY)
c) two Y chromosomes (YY)
d) one chromosome
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