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WorksheetsGenetics Grade 8
Total questions: 44
Worksheet time: 23mins
VOCABULARY:
Plant pollinates itself
cross pollination
self pollination
hybrid
pure-bread
VOCABULARY:
manually transferring pollen from the male parts of a flower to the female
cross pollination
self pollination
allele
gene
VOCABULARY:
one that always produces offspring that resembles the parent
purebread
hybrid
true breeding
allele
VOCABULARY:
when an organism has Gennes that are alike for a trait
True breeding plant
purebred
allele
chromosome
VOCABULARY:
the offspring of a true breeding plants with different characteristics
allele
gene
hybrid
dominant gene
The stronger of the 2 genes is..
(TT)
dominant gene
recessive gene
the weaker of the 2 genes is...
(tt)
dominant gene
recessive gene
Who was Gregor Mendel
(select all that apply)
father of genetics
austrian monk and biologist
studied traits (characteristics) of pea plants
he created nucleotides
True or False:
Gregor Mendel chose pea plants because they were easy to breed and cross pollinate
True
False
white flower+white flower= white (expected)
what did Mendel call this...
true breeding
purebred
hybrid
Purple flower+purple flower= purple AND white
after preforming these experiments, what was Mendel's conclusions?
not all plants are true-breeders
not all plants are hybrid
not all plants are purebreds
What was the 2nd generation of plants called
parental generation
Fifal or F
hybrids
TRUE OR FLASE:
genes are not passed from one generation to the next.
True
False
VOCABULARY:
threadlike structures that contain the genetic info that control traits
chromosomes
allele
gene
phenotype
VOCABULARY:
the part of the chromosome that contains the genetic information of a PARTICULAR trait.
gene
allele
pedigree
heterozygous
VOCABULARY:
the different form of the gene
gene pairs
allele
mutations
deletion
VOCABULARY:
a chart to show possible outcomes or combination of the cross between 2 organism
punet square
pedigree
VOCABULARY:
chart (family tree) that tracks family members with certain traits
punnet square
pedigree
what is this an example of (Rr or RR)
genotype
phenotype
mutation
sex linked disorders
TRUE OR FLASE:
someones eye color is an example of a PHENOTYPE
true
false
VOCABUALRY:
both alleles in the gene pair are the same
homozygous
heterozygous
VOCABUALRY:
both alleles in the gene pair are different
heterozygous
homozygous
the possibility that an event may or may not take place is..
probability
mutations
gene pairs
disorders
VOCABULARY:
when the offering has a combination of both parents
incomplete dominance
codminance
polygenic inheritance
when the offspring has a presence of both alleles
EX: red*white=both red and white
incomplete dominance
codominance
polygenic inheritance
VOCABULARY:
when multiple genes determine the phenotype of a trait
human height, skin color, eye color
polygenic inheritance
codminance
incomplete dominance
how many alleles can each person carry??
2
5
1
6
7
blood types: A, B, AB, and O
A and B are codominent, and O is..
recessive
dominant
idk
which of the following are environmental effects on phenotypes??
diet can affect height
medical care
living conditions
sleep
true or false:
a mutation is from a change in the nucleotide sequence of a chromosome
true
false
VOCABULARY:
reduces chances for survival and reproduction (cancer)
deletion
helpful
harmful
substitution
VOCABULARY:
improves chance for survival and reproduction (disease resistant)
helpful
harmful
mutations
insertion
what its deletion??
one or more nitrogen bases left out
one or more nitrogen bases ADDED
one nitrogen base is replaced by a different nitrogen base
what is insertion?
one or more nitrogen bases ADDED
one nitrogen base is replaced by a different nitrogen base
one or more nitrogen bases left out
what is substation??
one or more nitrogen bases left out
one nitrogen base is replaced by a different nitrogen base
one or more nitrogen bases added
true or false:
sex chromosomes are the pair that always do match
Female=xx
Male=xy
true
false
what are most common colors of color blindness
blue
red
green
yellow
true or false:
males xy have no dominant gene block for traits that will be present
true
false
what disorder is this?
-caused bye recessive gene
-Northern European ancestry
-thick mucus in the lungs and intestines
cystic fibroses
sickle cell disease
down syndrome
hemophilia
what disorder is this?
-recessive blood disorder
-production of hemoglobin affected
-cells are sickled shaped, not round
-African ancestry
hemophilia
sickle cell disease
Down syndrome
cystic fibrosis
what disorder is this?
-extra chromosome on the 21st pair
-malfunction during meiosis chromosomes split improperly
-distinct physical appearance, some degree of mental retardation
down syndrome
cystic fibrosis
hemophilia
sickle cell disease
what disorder is this?
-blood disorder--little or no clotting
-called by recessive allele one x chromosome
hemophilia
sickle cell disease
down syndrome
cystic fibroses
true or false:
amniocentesis is the testing done during a pregnancy
true
false
true or false:
karyotype is a picture of all the chromosomes
true
false
