Genetics and Heredity

If a plant has a heterozygous genotype for seed color, with yellow (Y) being dominant and green (y) being recessive, what phenotype will the plant express?

Which of the following statements accurately describes the relationship between genes and alleles?

In a certain species of flower, red (R) is dominant to white (r). If two heterozygous plants (Rr) are crossed, what is the probability of producing a white-flowered offspring?

According to Mendel's Law of Segregation, what happens to the pair of alleles an individual possesses for a specific trait?

What is the difference between genotype and phenotype?

In pea plants, tallness (T) is dominant over shortness (t). If a tall plant of unknown genotype is crossed with a short plant (tt), and all the offspring are tall, what is the most probable genotype of the tall parent?

According to Mendel's Law of Dominance, what will be the phenotype of an organism that has at least one dominant allele for a particular trait?

How are recessive alleles represented?

Which of the following statements accurately describes the relationship between diploid and haploid cells?

A cell with a haploid number of 20 undergoes meiosis. What is the diploid number of this cell?

During which phase of meiosis does crossing over occur?

What is the significance of crossing over in meiosis?

During Metaphase I, what structure aligns at the center of the cell?

What is the direct result of the separation of homologous chromosomes during Anaphase I?

If a plant has a heterozygous genotype (Gg) for a particular trait, what is the probability that a gamete produced by this plant will receive the 'g' allele?

In a cross between two heterozygous individuals (Ff), where 'F' is the dominant allele for freckles and 'f' is the recessive allele for no freckles, what is the probability that their offspring will have freckles?

What is the name given to the structure that is formed during prophase 1 when homologous chromosomes pair with each other?

A cell with a diploid chromosome number of 46 undergoes meiosis. How many chromosomes will each daughter cell have after meiosis II?

Two parents, both with the genotype Dd for dwarfism, are expecting a child. Given that the homozygous dominant genotype (DD) is lethal, what is the probability that their child will survive and have dwarfism?

Mary has freckles (Ff) and Roland does not have freckles (ff). What is the probability that their child will inherit the freckles trait?

Doris and Todd are dwarfs (Dd), where DD is lethal. What is the probability that their child be a non-dwarf?

In a scenario where a trait is determined by a single gene with two alleles (A and a), and two heterozygous individuals (Aa) reproduce, what proportion of their offspring is expected to also be heterozygous?

Two pea plants are crossed. One plant is homozygous dominant for green seeds (GG), and the other is homozygous recessive for yellow seeds (gg). What is the probability that an offspring from this cross will have the heterozygous genotype (Gg)?

In a certain species of bird, the allele for blue feathers (B) is dominant over the allele for brown feathers (b). If two heterozygous birds (Bb) mate, what is the probability of them having an offspring with brown feathers?

In a dihybrid cross, what is the purpose of using the FOIL method?

Consider a dihybrid cross between two plants with genotypes AaBb and AaBb. What proportion of the offspring is expected to be homozygous recessive for both traits (aabb)?

Two parents with genotypes BbRr are crossed. What is the probability of producing an offspring with the genotype BBrr?

What meiotic process does the FOIL method help to represent when determining allele combinations?

A plant breeder crosses two pea plants, both heterozygous for seed color (Yy) and pod shape (Ii). Yellow seed color (Y) is dominant to green (y), and inflated pod shape (I) is dominant to constricted (i). What is the expected phenotypic ratio of the offspring?

In a dihybrid cross where both parents are heterozygous for two traits (AaBb), what is the probability of an offspring displaying at least one dominant trait?

If you cross two pea plants with genotypes GgWw and GgWw (G = green pods, g = yellow pods, W = wrinkled seeds, w = smooth seeds), what fraction of the offspring will have green pods and wrinkled seeds?

A researcher performs a dihybrid cross with two traits and observes a significant deviation from the expected 9:3:3:1 phenotypic ratio. What is the most likely explanation for this result?

What is the immediate result of Telophase I and Cytokinesis in meiosis?

What is the main event that occurs during Metaphase II of meiosis?

What is the key occurrence during Anaphase II?

What is the final product of meiosis?

How does Prophase II differ from Prophase I?

If a cell entering meiosis has 20 chromosomes, how many chromosomes will each daughter cell have after Telophase II and Cytokinesis?

Which of the following processes contributes to genetic variation in meiosis?

In what way does cytokinesis following Telophase I differ from cytokinesis following Telophase II?

In rabbits, full color (C) is dominant to chinchilla (cch), which is dominant to Himalayan (ch), which is dominant to albino (c). If a chinchilla rabbit (cchc) is crossed with a Himalayan rabbit (chc), what proportion of the offspring would be expected to be albino (cc)?

A plant species has three alleles for petal color: $R$ (red), $r$ (white), and $r'$ (pink). $R$ is dominant to both $r$ and $r'$, and $r'$ is dominant to $r$. If a red-flowered plant ($Rr'$) is crossed with a pink-flowered plant ($r'r$), what is the expected ratio of flower colors in their offspring?

In a certain species of bird, feather color is controlled by a single gene with two alleles: $B$ (black) and $b$ (white). However, the heterozygous genotype ($Bb$) results in gray feathers. If two gray birds are mated, what percentage of their offspring would be expected to also have gray feathers?

A researcher is studying a new gene in mice and identifies two alleles: $A$ (agouti fur) and $a$ (black fur). She crosses two agouti mice and observes that their offspring include both agouti and black mice. What can be concluded about the inheritance pattern of these alleles?

Which statement accurately contrasts meiosis and mitosis?

During meiosis, when does the separation of homologous chromosomes occur?

What is the primary purpose of meiosis in sexually reproducing organisms?

Which of the following events contributes most significantly to genetic variation during meiosis?

Dihybrid Cross

Genotype

Gamete

FOIL Method

Punnett Square

Heterozygous

F1 Generation

Offspring

Homologous Chromosomes

Diploid

Haploid

Crossing Over

Tetrad

Chiasma

Metaphase I

Anaphase I

Probability

Segregation

Gamete allele probability

Homozygous

Dwarfism (dominant)

Non-Mendelian Inheritance

C allele in rabbits

cch allele in rabbits

ch allele in rabbits

c allele in rabbits

Meiosis definition

Chromosome number significance

Meiosis purpose

Linked genes

Genes

Alleles

Law of Segregation

Law of Dominance

Dominant Allele

Recessive Allele

Telophase I

Prophase II

Telophase II

Cytokinesis

Haploid Cells (Meiosis I)

Meiosis End Product