Genetics Practice Test Flashcards
Which of the following is the study of heredity?
genetics
The passing of genetic material from parent to offspring is called
heredity
Dad is colorblind which is a sex-linked and recessive trait, but mom is not colorblind. How is it possible that this couple has a colorblind daughter?
if mom is heterozygous
Chromosomes numbered 1-44 in humans are the
autosomes
Which type of gene gets covered up by another?
recessive
Different forms of the same gene are called
alleles
If an individual has the following genotype, Hhrr, what are the possible gametes?
Hr, Hr, hr, hr
When sperm and egg come together, a(n) ______ forms.
zygote
How many genes does an organism get from its parents for each characteristic?
1
Which of the following is a homozygous recessive genotype?
nn
Which if the following genotypes is considered heterozygous?
Rr & X^A X^a
What are non-sex chromosomes called?
autosomes
The last chromosomes in humans (#45 & 46) are the
sex chromosomes
A person with type AB blood can never have a child with type O blood.
True
Which of the following states that each pair of alleles segregate independently during meiosis?
law of independent assortment
Genes for sex-linked traits are generally carried on Y chromosome.
False
If mom has blood type A and dad has blood type B, can they have a child with blood type O?
yes, if mom is I^Ai and dad is I^Bi
Which if the following states that each allele in pair separates into different gamete during meiosis?
law of segregation
Which if the following refers to having the exact same alleles?
homozygous dominant, homozygous recessive
With incomplete dominance, we can see the phenotypic difference between a heterozygous and homozygous individual.
True
Which type of a gene can cover up another?
dominant
The physical characteristic that is expressed is the
phenotype
A(n) ____ is a specific part of a chromosome that determined a trait.
gene
