Genetics and Heredity Test Questions And Answers 100% Pass
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Course
Genetics
Institution
Genetics
Genetics and Heredity Test Questions And
Answers 100% Pass
Describe Heredity Vs. Genetics - answerHeredity is DNA- the passing of characteristics from
one generation to the next. But genetics is the study of genes and variations in organisms.
What are genes? - answerGenes are chemical factors i...
Genetics and Heredity Test Questions And
Answers 100% Pass
Describe Heredity Vs. Genetics - answer✔Heredity is DNA- the passing of characteristics from
one generation to the next. But genetics is the study of genes and variations in organisms.
What are genes? - answer✔Genes are chemical factors in our bodies that determine our traits.
What are chromosomes? - answer✔Chromosomes are the chemical that make up DNA- (they are
condensed DNA). They come in pairs.
What are phenotypes? - answer✔Phenotypes are the physical characteristics that you have.
What are genotypes? - answer✔Your genotype is the gene combination you have.
What does is mean to be homozygous/a purebred? - answer✔To be homozygous is to have 2 of
the same alleles for a specific trait: (ex. Dominant/TT or recessive/tt). This is also referred as to
be a "purebred".
What does it mean to be heterozygous/a hybrid? - answer✔To be heterozygous is to have 2
different alleles for a specific trait: (ex. Dominant+recessive/Tt). This is also referred as to be a
"hybrid".
What are alleles? - answer✔An allele is an alternative form of a gene. They can be dominant or
ressessive.
What are karyotypes? - answer✔Karyotypes are pictures of a chromosome in its cell.
Who was Gregor Mendel and what was his contribution to genetics? - answer✔Gregor Mendel
was an Austrian monk who had a poor family. He was very interested in science and
experimented with peas for 8 years and observed that traits are passed down from parents to
offsprings. He wasn't recognized for his work until 35 years after his death.
Who were the Romanovs and what genetic disease affected their lives? - answer✔The Romanovs
were a Russian royal family who were greatly affected by a rare form of a common disease-
Hemophilia B. Mostly men developed it though in the family line, and women were usually just
carriers. Tsar Nicholas Romanov II's son developed it and his wife Alexandra and sister
Anastasia were carriers. Hemophilia B is a disease that makes your blood have trouble clotting,
and you bleed very easily.
What are Punnett Squares and how do you solve for traits using a Punnett Square? -
answer✔Named after Reginald Punnett, a "Punnett Square" is a chart that shows the possible
combinations of alleles that can result from a genetic cross. You put in each of your parents'
alleles and use the chart to see if they are heterozygous or homozygous for a certain trait.
What is probability and how does is relate to genetics? - answer✔Probability is a number that
describes how likely it is that an event will occur. I think it relates to genetics because probability
shows how likely an offspring will have a certain characteristic.
What are genetic diseases? - answer✔Genetic diseases can be passed down or inherited from
parents to children, of can be caused by abnormalities in chromosomes or mistakes during
Meiosis. Some genetic diseases are only inherited if the baby is a certain sex (sex-linked
diseases). While some genetic diseases are detected at birth, others may not show up until late in
adult life.
What is Sickle Cell Anemia? - answer✔Sickle Cell Anemia is a genetic disease which people
possibly can acquire if their ancestry is traced back to either Northern Mediterranean or Africa.
Organ failure and pain are common symptoms of this disease, but it really varies per person.
What is Down Syndrome? - answer✔Down Syndrome, also known as Trisomy 21, is a genetic
disease. It causes physical abnormalities and mental disabilities.
What is colorblindness? - answer✔Colorblindness is a genetic disease that is inherited from
parents and is a sex-linked disorder. This disease causes people not to be able to see certain
colors.
What is DNA? - answer✔DNA- (deoxyribonucleic acid) is heredity material. Most DNA is
found in the nucleus. However, some DNA is found in the mitochondria (mitochondrial DNA).
What is DNA's structure? - answer✔It looks like a double-helix (twisted ladder). The "rungs" of
the ladder are nitrogen bases (base pairs) with a hydrogen bond binding them together. The sides
of the ladder are a mix of sugar and phosphates, classified as "deoxyribos".
What are the DNA base pairs? - answer✔Adenine (A) and thymine (T).
Cytosine (C) and guanine (G).
What is amniocentesis? - answer✔In a process called amniocentesis, doctors can now take DNA
samples of a baby from pregnant mothers.
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