Why did Mendel continue some of his experiment to the F_2 or F_3 generation? A)

Question

Why did Mendel continue some of his experiment to the F_2 or F_3 generation? A) to obtain a larger number of offspring on which to base statistics B) to observe whether or not a recessive trait would reappear C) to observe whether or not the dominant trait would reappear D) to distinguish which alleles segregating E) to be able describe the frequency of recombination Two plants are crossed resulting in offspring with a 3:1 ratio for a particular trait. What does this suggest? A) that the parents were true-breeding for contrasting traits B) that the trait shows incomplete dominance C) that a blending of traits has occurred D) that the parents were both heterozygous for a single trait E) that each offspring has the same alleles for each of two traits A sexually reproducing animal has two unlinked genes, one for head a shape(H) and one for tail length (T). Its is genotype HhTr. Which the following genotypes is possible in a gamete from this organism? A) tt B) Hh C) HhTt D) T E) HT Mendel's second law of independent assortment has its basis in which of the following events of meiosis I? A) synapsis of homologous chromosomes B) crossing over C) alignment of tetrads at the equator D) separation of homologs at anaphase E) separation of cells at telophase Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails(t). What fraction of the progeny of crosses BbTt times BBtt will be expected to have black fur and long tails? A) 1/16 B) 3/16 D) 1/2 E) 9/16 In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygous tall plant, what is the probability that the offspring will be short?

Explanation / Answer

Please see all the below answers with corresponding numbers.

27) To observe whether or not a recessive trait would appear(B).

29) HT genotype is possible in a gamete from this organism(E).

30) Alignment of tetrads at the equator(C).

31) a fraction of 1/2 is expected to have black fur and long tails(D).

32) If a heterozygous plant is crossed with a homozygous tall plant, there will be a zero probability that the offspring will be short.

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