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Genetics Part 1
What does the square represent in a pedigree?
This genotype ( rr) represents what?
Genetics Part 1
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Answers
1
This genotype ( rr) represents what?
homozygous for the trait
heterozygous for the trait
haploid for the trait
mutated
2
What does the square represent in a pedigree?
female
male
carrier
uncle
3
What does the circle represent in a pedigree?
carrier
male
uncle
female
4
To make his first cross Mendel used what type of plants?
self-breeding
true-breeding
heterozygous plants
hybrids
5
How many total traits could be produced if the alleles are codominant?
1
3
4
2
6
What term is used to describe two or more genes that are inherited together?
traits
homologous
linked
same
7
What does Mendel's Law of Segregation state?
two alleles segregate independently when gametes are formed
alleles separate independently after gamete formation
the pair of alleles depend on each other.
alleles remain together when gametes are formed
8
Which of the following can influence gene expression?
karyotype
pedigree
environment
phenotype
9
The liklihood an event will occur is known as a ______________________.
outcome
statistics
chance
probability
10
Specific forms of a character are known as?
characters
genotypes
phenotypes
traits
11
The scientific study of heredity is called?
genetics
pollination
meiosis
crossing-over
12
The alternate forms of a gene are called?
centromeres
alleles
gametes
phenotypes
13
How are the male sex chromosomes represented?
XX
XO
OO
XY
14
If a trait is controlled by 4 or more alleles it is said to have?
homozygous alleles
hybridization
autosomes
multiple alleles
15
If a genetic trait appears in every generation what is the likely inheritance?
dominant
recessive
superior
phenotypic
16
What is a hybrid?
offspring from parents who are homozygous dominant
an offspring of a parent with the same traits
offspring of parents with similar traits
offspring of parents with contrasting traits
17
What is the phenotype of an organism?
occurs in dominate alleles only
represents genetic composition
cannot be seen
the physical appearance
18
The transfer of a male pollen grain to the female organ is known as?
fertilization
pollination
mating
reproduction
19
How did Mendel obtain his P or parental generation for his plants?
assort independently
cross-pollinate
segregate
self-pollinate
20
If tall is dominate to short which genotype would represent a heterozygous tall plant?
TT
tt
T
Tt
