2.) A heterozygous individual who can pass on an allele for a genetic disorder b
ID: 142783 • Letter: 2
Question
2.) A heterozygous individual who can pass on an allele for a genetic disorder but does not express any of the characteristics for having the disorder is called _ (blank) _.
a. A carrier
b. Recessive
c. Dominant
d. Unaffected
e. A pedigree
3.) Match the words in the word bank with their definition:
WORD BANK: allele, gene, gene iocus, dominant allele, recessive allele
DEFINITIONS: -alternative form of a gene, -expression of this can be masked by other alleles,- masks the expression of other alleles, -where alleles occur on homologous chromosomes,-fundimential unit of inheritance
4.) match the words in the word bank with their definition
WORDBANK: Genotype, phenotype, homozygous, heterozygous, diploid, haploid
DEFINITIONS: - 2 chromosomes with the same arrangment of genes along thier length, -alleles an individual recieves at fertilization, one copy of a chromosome, 2 identical alleles, physical appearnace of an individual, 2 different alleles at gene icous
5.) match the genetic terms with their descriptions
TERMS: P, F1, F
DESCRIPTION: offspring a cross between first generations, offspring a cross between parents, true breeding parents
6.)
Fill in the Punnett square for a cross between the following individuals.
Aa x aa – dominant trait is red, recessive trait is white
7.) What is the genotypic and phenotypic ratios from this cross?
8.) What is the chi square equation?
Select one:
a. 2 = [(O – E)2/E]
b. 3 = [(O – E)3/E]
c. 2 = [(O – E)2*E]
d. 2 = [(O – E)3/E]
9.) Calculate the degrees of freedom if 5 defined classes are being rested. Show your work.
10.)
Determine the X2 using the following information. Show your work.
You hypothesize that the gene for rat coat color follows Mendelian inheritance. After you perform a cross between two monohybrids, you expect to get 75 black coats and 25 white coats in a population of 100. However, you observe 71 black coats and 29 white coats
11.) Using your answer from #10, determine the p value. Is your hypothesis supported or rejected? How do you know?
12.)
Explanation / Answer
2. A heterozygous individual who can pass on an allele for a genetic disorder but does not express any of the characteristics for having the disorder is called carrier. Hence, option “a” is correct.
3. Match the words in the word bank with their definition:
Allele: alternative form of a gene
Gene: fundamental unit of inheritance
Gene locus: where alleles occur on homologous chromosomes
Dominant allele: masks the expression of other alleles
Recessive allele: expression of this can be masked by other alleles,
4. Match the words in the word bank with their definition
Genotype: alleles an individual receives at fertilization
Phenotype: physical appearance of an individual
Homozygous: 2 identical alleles
Heterozygous: 2 different alleles at gene icous
Diploid: 2 chromosomes with the same arrangment of genes along thier length
Haploid: one copy of a chromosome
5. Match the genetic terms with their descriptions:
P: true breeding parents
F1: offspring a cross between first generations
F: offspring a cross between parents
6. Fill in the Punnett square for a cross between the following individuals
a
a
A
Aa
Aa
a
aa
aa
7. Genotypic ratio is 1:1
Phenotypic ratio is 1:1
a
a
A
Aa
Aa
a
aa
aa
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