Chapter 4: Patterns Of Heredity Question Preview (ID: 827)


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Inherited traits are the result of
a) genes
b) the devision of 2n cells
c) practice and ability
d) meiosis I

What happens during sexual reproduction?
a) A body cell from each parent combines to form a new cell.
b) Dominant genes combine to form an offspring.
c) Recessive genes combine to form an offspring.
d) A gamete from each parent combines to form a new cell.

An allele that is expressed even if only one copy is present in a genotype is a
a) complete allele
b) recessive allele
c) dominant allele
d) half allele

Dwarf pea plants (tt) are crossed with pea plants of regular height (TT). Which of these describes the first generation plants?
a) All are regular height.
b) All are dwarf height.
c) Half are regular height.
d) One-quarter are dwarf height.

A Punnett square is a representation of how
a) homologs might split
b) genes are arranged on chromosomes
c) alleles might combine
d) meiosis will occur

A parent has one dominant allele for tall (T) and one for short (t). The other parent has a tt genotype. What is the probability of the offspring's being tall?
a) 0 percent
b) 25 percent
c) 50 percent
d) 100 percent

What are the chances that a human offspring will have an XY genotype?
a) 1:4
b) 1:2
c) 3:4
d) 1:1

A 2n human cell has 46 chromosomes. How many chromosomes does a male gamete have?
a) 23
b) 45
c) 46
d) 92

During meiosis, cells divide
a) once
b) twice
c) four times
d) eight times

Which of the following occurs in meiosis that does NOT occur in mitosis?
a) Sex cells are made.
b) Body cells are made.
c) Cell division occurs.
d) Fertilization occurs.

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