Genetics Question Preview (ID: 39399)


Unit 5. TEACHERS: click here for quick copy question ID numbers.

Which of the following are all the possible offspring genotypes for a cross between a homozygous dominant mom and a homozygous recessive dad?
a) Heterozygous
b) Heterozygous and homozygous dominant
c) homozygous dominant and homozygous recessive
d) homozygous dominant and heterozygous

What is a phenotype?
a) Genes of an organism
b) genotype
c) The physical appearance of an organism
d) Sperm and Egg

What are the gametes of a plant that is Homozygous dominant for height and Heterozygous for Purple petals
a) HHPp
b) HP, HP, Hp, Hp
c) HP, hP, Hp, hp
d) Hp, HP, HP, HP

Yellow is dominant to pink. If a person has a Yy genotype what would be their phenotype?
a) Pink
b) Heterozygous
c) Yellow
d) Pink and yellow

Which of the following is the the alleles in the genotype Heterozygous?
a) HH
b) yy
c) yellow
d) Gg

If P means no freckles and p means freckles... which kid below would have freckles
a) PP
b) Pp
c) pp
d) None of the kids have freckles

If Dad Tt had a child with mom Tt what percent of their children will be short (tt)
a) 100%
b) 75%
c) 50%
d) 25%

Which of the following represents a purebred trait?
a) Bb
b) bb
c) Hybrid
d) Hh

Fluffy fur is a dominant trait in guinea pigs. Two fluffy guinea pigs have a non-fluffy offspring. What must be the genotypes of the parents?
a) AA and AA
b) AA and Aa
c) aa and AA
d) Aa and Aa

The probability of a human couple having a male child is
a) 100%
b) 75%
c) 50%
d) 46%

Having more than 5 fingers (Polydactyly) is a dominant trait. What is the probability that two people, each of which have 5 fingers per limb,will have a 6-fingered child?
a) 100%
b) 50%
c) 25%
d) 0%

Which of the following shows chromosome 23 for a female?
a) Aa
b) XX
c) XY
d) XYY

A family tree diagram that is used to track traits through several generations is known as a
a) Genotype
b) Pedigree
c) Karyotype
d) Cladogram

When a cell receives too many or too few chromosomes during meiosis, ____ has occurred
a) Nondisjunction
b) Mitosis
c) Translocation
d) Gametes

Sex-linked traits are
a) Only found in females
b) Found more often in males
c) Carried only by males
d) On the Y Chromosome

The passing of traits from one generation to the next is ____.
a) Karyotypes
b) Genotype
c) Heredity
d) Evolution

During ____, alleles separate into different sex cells
a) Mitosis
b) Translocation
c) Fertilization
d) Meiosis

Which of the following is the product of meiosis?
a) zygote
b) gamete
c) somatic cell
d) Heart cell

The purpose of crossing over during meiosis is
a) to increase genetic variation
b) to ensure all offspring all males
c) to decrease diversity
d) to create an identical daughter cell

An organism goes through meiosis and one of the gametes has a mutation, who would receive this mutation?
a) The brother of the organisms
b) The parent of the organism
c) The offspring of the organism
d) The organism

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