Biology Chapter 12 Study Questions

a. 9 tall vine/red fruit; 3 tall vine/yellow fruit; 3 dwarf vine/red fruit; 1 dwarf vine/yellow fruit

A gardener crosses a true-breeding tall tomato plant bearing red fruit with a true breeding dwarf tomato plant with yellow fruit. And tomatoes, tall Vine (T) is dominant to dwarf Vine(t) and red fruit (R) is dominant to yellow fruit (r) Assume that the two genes controlling the tall Vine and red fruit traits are on two different pairs of chromosomes What are the expected phenotype ratios in the F2 generation a. 9 tall vine/red fruit; 3 tall vine/yellow fruit; 3 dwarf vine/red fruit; 1 dwarf vine/yellow fruit b. 4 tall vine/red fruit; 3 tall vine/yellow fruit; 1 dwarf vine/red fruit c. 2 tall vine/red fruit; 4 tall vine/yellow fruit; 2 dwarf vine/yellow fruit d. 16 tall vine/ red fruit; 9 tall vine/yellow fruit; 3 dwarf vine/red fruit; 1 dwarf vine/yellow fruit

a. Tt

A genesis cross tall pea plants and obtain 971 tall pea plants and 315 short pea plants in the F1 generation What were the genotypes of the parents that produce The Offspring in the Punnett Square shown, if T is the allele for tall plant and t is the allele for short? a. Tt b. TT c. tt d. TtTt

c. No, because the parents have no alleles for chinchilla

Cool color in rabbits is inherited by multiple alleles for a single Gene. The table describes the alleles and their inheritance Would it be possible to obtain a rabbit with chinchilla coat color if one parent is White and the other parent has a Himalayan coat color? a. Yes, because the seal is recessive to the CCH allele b. Yes, if the Himalayan parent rabbits genotype is chch c. No, because the parents have no alleles for chinchilla d. No, because the CH allele is dominant to the chch allele

a. Meiosis I

Homologous chromosomes line up at the center of the cell a. Meiosis I b. Mitosis

a. Meiosis I

Homologous chromosomes pair to form a tetrad and cross over a. Meiosis I b. Mitosis

a. Meiosis I

Homologous pairs separate and move toward opposite poles of the cell a. Meiosis I b. Mitosis

d. 8

How many different gametes can be produced by a tall, yellow-seeded, purple flowered, and wrinkled seeded pea plant (TtYyPprr)? a. 2 b. 4 c. 6 d. 8

a. Three-fourths of the F2 plants show the round seed phenotype and carry the dominant allele for roundness

Mendal studied 7 traits in pea plants. One of the monohybrid crosses email was between plants with round seeds (R) and plants with wrinkled seeds (r). What was a conclusion that Mendel Drew from the F2 generation of this cross? a. Three-fourths of the F2 plants show the round seed phenotype and carry the dominant allele for roundness b. One-fourth of the F2 plants show the round seed phenotype and are heterozygous c. The F2 plants are all heterozygous d.The F2 plants all have wrinkled seeds, but some carry the allele for round seeds

b. Mitosis

Replicated chromosomes line up at the center of the cell a. Meiosis I b. Mitosis

b. Mitosis

Sister chromatids separate and move to opposite poles a. Meiosis I b. Mitosis

b. All Offspring will show the dominant phenotype for this trait

The Punnett Square describe the potential offspring of a cross. What phenotypes will be shown by The Offspring? a. All Offspring will show the recessive phenotype for this trait b. All Offspring will show the dominant phenotype for this trait c. Half of The Offspring will show the dominant phenotype in half will show the recessive phenotype d. Three fourths of The Offspring will show the dominant phenotype in 1/4 will show the recessive phenotype

b. Mitosis

These homologous chromosomes carry different alleles of the wild-type and mutant type in the fruit fly Drosophila a. Meiosis I b. Mitosis

b. Mitosis

Two genetically identical, diploid daughter cells are formed a. Meiosis I b. Mitosis

a. Meiosis I

Two genetically not identical, haploid daughter cells are formed a. Meiosis I b. Mitosis

a. Four haploid daughter cells are formed during meiosis 2 d. Chromosomes do not replicate in the paired chromatids separate

What happens to the two cells formed at the end of meiosis 1? Choose two correct answer a. Four haploid daughter cells are formed during meiosis 2 b. Four diploid gametes are produced during meiosis 2 c. Each chromosome is replicated pairs with its homologous chromosome d. Chromosomes do not replicate in the paired chromatids separate

c. Polygenic inheritance

What pattern of inheritance is suggested by the graph? a. Codominance b. Multiple alleles c. Polygenic inheritance d. Incomplete dominance