Title: Heredity is defined as:
1Heredity is defined as
- Transmission of characteristics from parents to
offspring
2When two or more alleles result in an appearance
in between the dominant and recessive trait, this
is called
3Traits that result from genes on the X chromosome
are called
4Define crossing over
- The exchange of genes among homologous
chromosomes occurs during prophase I of meiosis
5Mendel found that pea pod color and pea pod shape
are separate genes that occur independently from
one another. This describes the law of
6The study of structure and function of genes is
called
7How is the F2 generation produced?
- Crossing two organisms from F1
8You have a pea plant that displays the dominant
phenotype, but you dont know if the plant is
heterozygous or homozygous. How could you find
out?
- Conduct a testcross cross it with a plant that
is homozygous recessive
9The gene for sickle-cell anemia causes multiple
phenotypic characteristics. This is an example of
- Pleiotrophy one gene responsible for multiple
phenotypic effects
10Mendel discovered paired genes separate during
the formation of gametes. This led to the law of
11Set up a punnett square using the following
informationDominate allele for long wings
LRecessive allele for short wings l Cross a
heterozygous parent (Ll) with a heterozygous
parent (Ll)
- a. What is the probability of producing
individuals homozygous for long
wings? b. What is the probability of producing
individuals homozygous for short
wings? c. What is the probability of producing
individuals heterozygous for long
wings? d. What is the probability of producing
individuals heterozygous for short wings?
12Set up a punnett square using the following
informationDominate allele for black fur in
guinea pigs BRecessive allele for white fur in
guinea pigs bDominate allele for rough fur in
guinea pigs RRecessive allele for smooth fur
in guinea pigs rCross a heterozygous parent
with a homozygous recessive parent
- a. What is the probability of producing guinea
pigs with black, rough fur? - Possible genotype(s)?
- b. What is the probability of producing guinea
pigs - with black, smooth fur?
- Possible genotype(s)?
13- c. What is the probability of producing guinea
pigs - with white, rough fur?
- Possible genotype(s)?
- d. What is the probability of producing guinea
pigs - with white, smooth fur?
- Possible genotype(s)?
14Anne is pregnant with Scott's child. What is the
chance that the baby will have type A
blood?Use the table on the blood type handout
as a key to solving the next few blood type
problems.
- Susan is the mother of Charlie's first two
children. The oldest, Dawn, has type AB blood
while her sister, Kate, has type B blood.
Charlie is now expecting a baby with Anne. What
is the chance that this child will have type O
blood?
15- . Scott and Susan's son, Paul, is willing to
donate blood to a young girl with leukemia. If
the recipient has type O blood, will Paul be able
to donate to her?
16- Mr. and Mrs. Yardaz are expecting their second
child. Both parents have pointed ears but the
couples 2-year old son has round ears. What is
the chance that their second born will have
pointed ears?
17- Doug Doouge has four arms. Dougs pregnant wife
only has two arms. Doug would really like a
daughter that has four arms just like him. What
is the chance that Dougs wife will give birth to
a baby girl with four arms?
18- In four oclock flowers, red plants are
homozygous for the allele R for flower color.
Plants with white flowers are homozygous for r.
Plants with pink flowers are heterozygous. What
is the phenotypic ratio of cross between two pink
plants?