Which Correctly Describes Sister Chromatids

Question: Asexual reproduction __________.

Answer: produces offspring genetically identical to the parent

Question: Which of the following statements correctly describes how sister chromatids and homologous chromosomes differ from each other?

Answer: Homologous chromosomes contain the same gene loci but may have different alleles of a particular gene. Sister chromatids are identical copies of each other produced during DNA replication.

Question: Which statement correctly describes how cellular DNA content and ploidy levels change during meiosis I and meiosis II?

Answer: DNA content is halved in both meiosis I and meiosis II. Ploidy level changes from diploid to haploid in meiosis I, and remains haploid in meiosis II.

Question: Which processes lead to most genetic variation in sexually reproducing organisms?

Answer: crossing over, random fertilization, independent assortment of chromosomes in meiosis

Question: Which of these gametes contains one or more recombinant chromosomes?

Answer: B and C

Question: What number and types of chromosomes are found in a human somatic cell?

Answer: 44 autosomes and 2 sex chromosomes

Question: For what purpose(s) might a karyotype be prepared?

Answer: for prenatal screening to determine if a fetus has the correct number of chromosomes, to determine whether a fetus is male or female, to detect the possible presence of chromosomal abnormalities such as deletions, inversions, or translocations

Question: Human gametes are produced by ___

Answer: meiosis

Question: Normal human gametes carry _____ chromosomes.

Answer: 23

Question: Which of these cells is (are) haploid?

Answer: C and D

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