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Chapter 11: Intro to Genetics Flashcards | StudBud
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Chapter 11: Intro to Genetics
Chapter 11: Intro to Genetics
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Mendel, basic genetics, meiosis
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1
Gametes are produced by the process of
crossing-over
mitosis
meiosis
replication
2
Which principle of genetics does this organism reflect?
Probability.
Codominance.
Incomplete dominance.
Polygenic traits.
3
Gregor Mendel is considered the father of genetics.
False
True
4
Where are chromosomes found?
In the DNA.
In alleles.
In genes.
In the nucleus.
5
Organisms that have identical alleles for a particular trait are called
homozygous.
heterozygous.
recessive.
hybrids.
6
What is the difference between a genotype and a phenotype?
Genotypes are alleles, phenotypes are traits.
Genotypes are recessive, phenotypes are dominant.
Genotypes are heterozygous, phenotypes are homozygous.
Geno. result from true-breeding, pheno. from fertilization.
7
Variation in skin color is a result of
incomplete dominance
polygenic traits
codominance
multiple alleles
8
The likelihood that a particular event will occur is referred to as
Probability.
Punnett Squares.
mathematics.
Statistics.
9
The principle of dominance states that
alleles are neither dominant nor recessive
all alleles are dominant
all alleles are recessive
some alleles are dominant and others are recessive
10
A specific characteristic, such as color or size, is called
DNA.
a gene.
an allele.
a trait.
11
Is it possible to have the same phenotype with another person, but a different genotype?
No.
Yes.
12
The offspring of crosses between different parents are called
hybrids.
true bred offspring.
clones.
homozygotes.
13
The principles of probability can be used to
predict traits of the parents used in genetic crosses
predict traits of the offspring produced by genetic crosses
determine the actual outcomes in genetic crosses
decide which organisms are best to use in genetic crosses
14
Environmental conditions have no affect on genetic traits.
True
False
15
The scientific study of heredity is called
chemistry
principle of dominance
biology
genetics
16
The different forms of a gene contributed by each parent is called
genetics.
a recessive trait.
a dominant trait.
an allele.
17
Gregor Mendel concluded that traits are
determined by dominant factors only
not inherited by offspring
determined by recessive factors only
inherited by the passing of factors from parents to offspring
18
Gregor Mendel's principles of genetics applies to
animals only
all organisms
pea plants only
plants only
19
What is a gamete?
The result of true-breeding.
An egg or sperm.
The term for the offspring between two different parents.
An alternate form of a gene.
20
If the red and white flowers are the parents, which of principle of genetics does this reflect?
probability.
Incomplete Dominance.
Polygenic traits.
Codominance.
21
What happens to the chromosome number during meiosis?
It doubles.
It stays the same.
It halves.
It becomes diploid.
22
Separation of alleles during gamete formation is known as
segregation
fertilization
dominance
genetics
23
Linked genes
assort independently
are on the same chromosome
are always recessive
are never separated.
24
An organism possessing the alleles ff for freckles would be considered
homozygous.
heterozygous.
25
What does the term "homologous" mean?
Dividing at the same time.
Undergoing the same number of divisions.
Having the same parents (true-breeding).
Having a chromosome from each parent.
26
If a pea plant's alleles for height are tt, what is true of its parents?
both parents were short
both parents contributed a dominant allele
both parents are tall, one is hetero the other homo
both parents contributed a recessive allele
27
What is formed at the end of meiosis?
four genetically identical cells
four genetically different cells
two genetically identical cells
two genetically different cells
28
Which of the following best summarizes the law of independent assortment?
A given gene will affect another gene during meiosis.
Gametes are independent from assorted traits.
Probability can be used to calculate genetics.
Traits on genes segregate during gamete formation.
29
If an organism's diploid number is 16, its haploid number is
8
0
32
12
30
A __ is a fertilized egg.
haploid
zygote
chromatid
diploid
31
A Tt pea plant is crossed with a short plant. the probability that an F1 plant will be tall
100%
50%
75%
25%
