anatomy 2 lab quiz 12 Inheritance

All of these are sexual sources of genetic variation

independent assortment of chromosomes crossover of homologous random fertilization of eggs by sperm

Prader-Willi Syndrome

is a condition inherited from the Father

A pair of chromosomes , one from the egg and one from the sperm , that carry complete (or nearly complete ) genetic instructions for the same traits are called

A homologous pair

Genes present only on the X chromosome are called ________.

sex-link genes

you notice both of your parents have a widows peak that is determined by the dominant allele W. You however have a straight hairline, which is a homozygous recessive condition (ww). What are the possible genoytypes of your parents ?

Ww and Ww

The genetic disorder ,dwarfism , inherited as ____ condition

heterozygous

How many autosomal do humans have

22

If a person is homozygous for a particular trait , the alleles for that trait

Have the same expression

You have performed electrophoresis on a sample of nomrla hemoglinbin (HbA), a sickle cell hemoglin (HbS) a mixutrue xontaingin HbA + HbS and a sample of hemoglobin from a patient. The patient sample shows 2 bnads, one at the same distance as the HbA band and one at the same distance a sthe HbS band What is true about your patient

The patient has sickle-cell trait

Predict the phenotype of a particular individual if the genotype of both parents is TT ; T determines tongue roller ; its dominant ;t determines non-roller, it's recessive

The person can roll their tongue

The probability of a certain event occurring is defined as: P= number of specific event/ total number of events. If an event happens one out of every two times it probability is

50%

If the probability of an even occurring is 50%what is the probability of that even occurring 5 times in a row?

1/32 ( 0.5 x 0.5x 0.5x 0.5 x 0.5 = 0.3125 & 1 divided by 32 = 0.3125)

what is the probability of a male having color blindness if the X chromosome carries the c allele? ( He is Xc XC determines normal color vision, it is dominant. Xc determines color blindness).

100%

The inheritance of sickle cell anemia involves incomplete dominance (S determines normal hemoglobin, it is deominant ; s is the sickle cell gene ) a homozygous recessive person has sickle cell anemia. A hererozygous person has the sickle cell trait. If the parental genotype are SS and ss what is the probability of offspring having the sickle cell trait ?

100% ; all are Ss

Autosomes are pairs that contain genes for determining

Body characteristics

you observe that your friend has dimples. Dimples result from the presence of the dominant gene D: absence of dimples is a homozygous recessive condition (dd). What genotype of genotypes might your friend have?

DD or Dd

If an individual has alleles for a particular trait that differ in their expression and one of the alleles always exert its effect , the individual is said to express the ___ gene

Dominant

Incomplete dominance occurs when

Each of the alleles is partially expressed

Alleles are

Genes coding for the same trait on a pair of homologous chromosomes

If the genotype of an individual contains alleles for a particular trait that differ in the their expression the individual is said to be ___ for that trait

Heterozygous

If white flowers are crossed with red flowers and the resulting plants have pink flowers , that condition

Incomplete dominance

the genes for color blindness are sex-linked and recessive. What is true about the expression of color blindness?

It is infrequently seen in women Father's cannot transmit sex-linked genes to their sons Fathers can transmit sex-linked genes to their daughters

The complement of chromosomes in an individual is called the

Karyotype

What is true about the sex chromosomes

Possession of the Y chromosome determines maleness

Genotype is ___

an individuals actual genetic makeup

Individuals that are heterozygous but show a normal phenotype are called

carriers

A person afflicted with huntington's disease inherited this malady from the ____ alleles

dominant

If the parental genotype for sickle cell anemia/trait are Ss and ss , what is the probability of offspring having the sickle cell trait? If there is some probability of offspring having sickle cell anemia, what is the probability?

triat 50% , anemia 50%