Los Angeles City College BIO100 Biology Phenotype Phenotype Questions Multiple choice, 10 questions. Basic Biology 100 questions. Genetics and Hereditary q

Los Angeles City College BIO100 Biology Phenotype Phenotype Questions Multiple choice, 10 questions. Basic Biology 100 questions. Genetics and Hereditary questions 1. When a parent who has two dominant alleles for a trait is crossed with a parent
with two recessive alleles for a trait, the offspring will:
(remember homozygous means two of the same alleles and heterozygous means two
different alleles)
A.
B.
C.
All offspring will have one dominant allele and one recessive allele.
All offspring will have the recessive allele.
All offspring will have the dominant allele.
2. When a parent who is heterozgyous for a trait is crossed with a parent who is
homozygous recessive for a trait, the offspring will:
(remember homozygous means two of the same alleles and heterozygous means two
different alleles)
A.
B.
C.
D.
be all homozygous recessive
be all heterozygous
be all homozygous dominant
be half heterozygous and half homozygous recessive
3. When a parent who is heterozgyous for a trait is crossed with a parent who is
homozygous dominant for a trait, the offspring will:
(remember homozygous means two of the same alleles and heterozygous means two
different alleles)
A.
B.
C.
all have the recessive phenotype
all have the dominant phenotype
have half the dominant phenotype and half the recessive phenotype
4. When a parent who is heterozgyous for a trait is crossed with a parent who is
heterozygous for a trait, the offspring will:
(remember homozygous means two of the same alleles and heterozygous means two
different alleles)
A.
B.
have 3 out of 4 the dominant phenotype and 1 out of 4 the recessive phenotype
all have the dominant phenotype
C.
D.
have 2 out of 4 the dominant phenotype and 2 out of 4 the recessive phenotype
have 1 out of 4 the dominant phenotype
5. When a parent who is heterozgyous for a trait is crossed with a parent who is
heterozygous for a trait, the offspring will:
(remember homozygous means two of the same alleles and heterozygous means two
different alleles)
A.
B.
C.
D.
have 3 out of 4 recessive phenotype
have 1 out of 4 homozygous dominant genotype
have 3 out of 4 dominant phenotype
have 3 out of 4 homozygous dominant genotype
6. When a parent who is heterozgyous for a trait is crossed with a parent who is
homozygous dominant for a trait, the offspring will:
(remember homozygous means two of the same alleles and heterozygous means two
different alleles)
A.
B.
C.
all have the recessive phenotype
all will have the dominant allele
all be homozygous dominant genotype
7. When a parent who is heterozgyous for a trait is crossed with a parent who is
heterozygous for a trait, the offspring will:
(remember homozygous means two of the same alleles and heterozygous means two
different alleles)
A.
have 1 dominant phenotype, 2 heterozygous genotypes, and 1 homozygous
recessive phenotype
B.
have all dominant phenotypes, 2 heterozygous genotypes, and 1 homozygous
recessive genotype
C.
have 3 dominant phenotypes, 2 heterozygous genotypes, and 1 homozygous
recessive genotype
8. If all offspring are heterozygous, then the parents:
A.
would both have the dominant phenotype
B.
would both be heterozygous
C.
would be one heterozygous and one homozygous dominant
D.
would both be homozygous, one recessive and one dominant
9. If a parent who is heterozygous for a trait is crossed with a parent who is
homozygous dominant for a trait, would any of the offspring have the recessive
phenotype?
A.
B.
Yes
No
10. When doing Punnett squares for fur, the letter f represents ______ and the letter F
represents _____.
A.
the dominant allele, the recessive allele
B.
the recessive allele, the dominant allele
C.
the dominant gene, the recessive gene
D.
the recessive gene, the dominant gene

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