Genetics and Inheritance: Key Concepts
for Biology Students Exam Questions and
Answers Graded A+
Genetics - Correct answer-The scientific study of genes, heredity, and the variation
of inherited traits among organisms.
Probability - Correct answer-A measure of the likelihood or chance that a specific
event will occur, used in genetics to predict the outcomes of inheritance.
Codominance - Correct answer-An inheritance pattern where both alleles for a trait
are fully and separately expressed in the phenotype of a heterozygous individual
(e.g., AB blood type in humans, roan cattle).
Homologous chromosomes - Correct answer-A pair of chromosomes (one from
each parent) that are similar in size, shape, and gene content, with genes located at
the same positions, but potentially with different alleles.
Fertilization - Correct answer-The process where male and female gametes (sperm
and egg) unite to form a zygote, restoring the diploid chromosome number.
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, Homozygous - Correct answer-Having two identical alleles for a specific gene
(e.g., AA or aa genotype).
Incomplete dominance - Correct answer-An inheritance pattern where the
heterozygous phenotype is a blend or intermediate between the two homozygous
phenotypes (e.g., red and white flowers producing pink flowers).
Diploid - Correct answer-A cell or organism that has two sets of chromosomes, one
inherited from each parent.
Trait - Correct answer-A specific characteristic or variation in the physical
appearance of a heritable characteristic (e.g., eye color, height).
Heterozygous - Correct answer-Having two different alleles for a specific gene
(e.g., Aa genotype).
Dominance - Correct answer-A genetic principle where one allele (the dominant
allele) masks or conceals the presence of another allele (the recessive allele) in the
phenotype of a heterozygote.
Haploid - Correct answer-A cell (such as a gamete) that has only one set of
chromosomes, half the usual number.
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for Biology Students Exam Questions and
Answers Graded A+
Genetics - Correct answer-The scientific study of genes, heredity, and the variation
of inherited traits among organisms.
Probability - Correct answer-A measure of the likelihood or chance that a specific
event will occur, used in genetics to predict the outcomes of inheritance.
Codominance - Correct answer-An inheritance pattern where both alleles for a trait
are fully and separately expressed in the phenotype of a heterozygous individual
(e.g., AB blood type in humans, roan cattle).
Homologous chromosomes - Correct answer-A pair of chromosomes (one from
each parent) that are similar in size, shape, and gene content, with genes located at
the same positions, but potentially with different alleles.
Fertilization - Correct answer-The process where male and female gametes (sperm
and egg) unite to form a zygote, restoring the diploid chromosome number.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Homozygous - Correct answer-Having two identical alleles for a specific gene
(e.g., AA or aa genotype).
Incomplete dominance - Correct answer-An inheritance pattern where the
heterozygous phenotype is a blend or intermediate between the two homozygous
phenotypes (e.g., red and white flowers producing pink flowers).
Diploid - Correct answer-A cell or organism that has two sets of chromosomes, one
inherited from each parent.
Trait - Correct answer-A specific characteristic or variation in the physical
appearance of a heritable characteristic (e.g., eye color, height).
Heterozygous - Correct answer-Having two different alleles for a specific gene
(e.g., Aa genotype).
Dominance - Correct answer-A genetic principle where one allele (the dominant
allele) masks or conceals the presence of another allele (the recessive allele) in the
phenotype of a heterozygote.
Haploid - Correct answer-A cell (such as a gamete) that has only one set of
chromosomes, half the usual number.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
