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dna- alleles, homozygous,dominant
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Created by
dan
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Cards (22)
What is the focus of today's video?
Different
genetic
terms
and concepts
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What is an allele?
A different
version
of the same
gene
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What is the difference between dominant and recessive alleles?
Dominant
alleles are expressed over
recessive
ones
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What does homozygous mean?
Having two identical
alleles
for a gene
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What does heterozygous mean?
Having two different
alleles
for a
gene
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What is a gene?
A segment of
DNA
coding for a
protein
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How do genes determine characteristics?
They
code
for
proteins
that influence
traits
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How are most characteristics determined?
By several interacting
genes
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What is the significance of alleles?
They are different forms of the same
gene
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What happens if a mouse is heterozygous for fur color?
One
allele
will be
dominant
, expressed
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What color will a heterozygous mouse be if the purple allele is dominant?
The mouse will be
purple
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What is required for a mouse to be green?
Both
alleles
must be for green fur
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What does homozygous recessive mean?
Having two
alleles
for
green fur
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What is the genotype?
The entire collection of
alleles
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How do different genotypes affect phenotype?
Different
genotypes
can
lead
to
different phenotypes
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What is the phenotype?
The observable characteristics from
genotype
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How can two mice have the same phenotype but different genotypes?
They can have different
alleles
but show the same trait
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What is the phenotype of a homozygous recessive mouse?
The mouse will be
green
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What are the key terms related to genetics discussed in the video?
Allele
Dominant
Recessive
Homozygous
Heterozygous
Genotype
Phenotype
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How do genotype and phenotype differ?
Genotype: Collection of
alleles
Phenotype: Observable characteristics from genotype
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What is the relationship between genes and proteins?
Genes code for specific proteins
Different
alleles
can code for different protein forms
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How do multiple genes influence traits like height?
Several genes
interact
to determine height
Each gene contributes to the overall trait
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