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Genetics (Unit 3) Flashcards | StudBud
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Genetics (Unit 3)
Genetics (Unit 3)
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1
An organism's physical traits or how it looks is called its...
genotype
stereotype
phenotype
2
What did Gregor Mendel do to study different characteristics during his genetic experiments?
He cross-pollinated plants
He studied only self-pollinating plants
He studied only asexual animals
3
An organism's genetic make-up or allele combination is called its...
genotype
stereotype
phenotype
4
Identify the term used for an organism having two of the same alleles.
hybrid
heterozygous
homozygous
5
Factors that control traits are called...
purebreds
recessives
genes
6
Identify the process by which the number of chromosomes is reduced by half the create sex cells.
meiosis
heredity
mitosis
7
Which term refers to physical characteristics that are studied in genetics?
traits
generations
offspring
8
What is the chromosome theory of inheritance?
Chromosomes are carried from parents to offspring on hybrids.
Hybrid pairs of chromosomes combine to form offspring.
Genes are carried from parents to offspring on chromosomes.
9
What is the genetic code?
The order of amino acids in a protein.
The order of nitrogen bases along a gene.
The number of nitrogen bases in a DNA molecule.
10
In an organism where 2 different alleles are both expressed, and neither is recessive, those alleles are said to be...
hybrids
codominant
coauthored
11
The scientific study of heredity is known as...
biology
mendelism
genetics
12
The different forms of a gene are called...
alleles
masks
factors
13
A heterozygous organism has...
only one allele for a trait
two different alleles for a trait.
two identical alleles for a trait
14
What does messenger RNA do during protein synthesis?
It copies the coded message from the DNA and carries into the cytoplasm.
It copies the coded message from the DNA and carries it into the nucleus.
It carries the amino acids and adds them to the growing protein.
15
The passing of traits from parent to offspring is known as...
hybrids
heredity
alleles
