Question:

Section 8.1, continued latroduction to Mendelian Geneties Practice 2 Answer the following questions about Mendelian genetics. Da

Section 8.1, continued
latroduction to Mendelian Geneties
Practice 2
Answer the following questions about Mendelian genetics. Darken the circle or circles that corresponde
your answer choice(s).
aa
O Ab
1. Which of the following represents a heterozygous genotype?
Aa
AA
2. A homozygous recessive genotype is shown by which of the following?
@ TT
A recessive trait would appear in the phenotype of which of these?
bb
© Bb
Il
0 TS
® T1
3.
BE
4. In pea plants, the allele for purple flowers is dominant to the allele for white flowers. Which of the following
correctly describes a pea plant that has white flowers?
@ It must be homozygous dominant
It must be homozygous recessive.
© It must be heterozygous.
It could be either heterozygous or homozygous dominant.
A homozygous dominant pea plant with purple flowers is crossed with a pea plant with white flowers. Whicho
the following correctly describes the offspring?
@ homozygous with purple flowers
© heterozygous with purple flowers
O homozygous with white flowers
O heterozygous with white flowers
S.
6.
Which of the following are true about a recessive gene trait? Choose all that apply.
@ It is expressed when the genotype is heterozygous.
It can be masked by a dominant gene trait.
© It is expressed only when a dominant gene isn't present.
It can be expressed when the genotype is homozygous.
© It cannot be expressed but can only passed onto the next generation,
7. Which of the following best describes Mendel's law of dominance?
When an organism has two different alleles of the same gene, both genes will be expressed equally in the
organism.
When an organism has two different alleles of the same gene, one of the genes will be expressed and the
other will be hidden.
When an organism has two of the same alleles for a gene, that allele is always dominant.
the
O When an organism has two of the same alleles for a gene, the stronger of the two genes will be expressed in
MAAP.EOC Biology
2020 Jerald D Duncan
178
Section
Mendelian Genetics and Inhentand

Section 8.1, continued latroduction to Mendelian Geneties Practice 2 Answer the following questions about Mendelian genetics. Darken the circle or circles that corresponde your answer choice(s). aa O Ab 1. Which of the following represents a heterozygous genotype? Aa AA 2. A homozygous recessive genotype is shown by which of the following? @ TT A recessive trait would appear in the phenotype of which of these? bb © Bb Il 0 TS ® T1 3. BE 4. In pea plants, the allele for purple flowers is dominant to the allele for white flowers. Which of the following correctly describes a pea plant that has white flowers? @ It must be homozygous dominant It must be homozygous recessive. © It must be heterozygous. It could be either heterozygous or homozygous dominant. A homozygous dominant pea plant with purple flowers is crossed with a pea plant with white flowers. Whicho the following correctly describes the offspring? @ homozygous with purple flowers © heterozygous with purple flowers O homozygous with white flowers O heterozygous with white flowers S. 6. Which of the following are true about a recessive gene trait? Choose all that apply. @ It is expressed when the genotype is heterozygous. It can be masked by a dominant gene trait. © It is expressed only when a dominant gene isn't present. It can be expressed when the genotype is homozygous. © It cannot be expressed but can only passed onto the next generation, 7. Which of the following best describes Mendel's law of dominance? When an organism has two different alleles of the same gene, both genes will be expressed equally in the organism. When an organism has two different alleles of the same gene, one of the genes will be expressed and the other will be hidden. When an organism has two of the same alleles for a gene, that allele is always dominant. the O When an organism has two of the same alleles for a gene, the stronger of the two genes will be expressed in MAAP.EOC Biology 2020 Jerald D Duncan 178 Section Mendelian Genetics and Inhentand