FREE BIOLOGY AND STUDY GAMES ABOUT MODULE

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FREE BIOLOGY AND STUDY GAMES ABOUT MODULE

4-BSC2010L EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -68 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: If nondisjunction occurs during anaphase I the final product of meiosis II is

Answer:

two cells with an extra CHR and 2 cells missing a CHR Question 2: What is the difference between homologous chromosomes and chromatids?

Answer:

Homologous chromosomes may carry different alleles.Question 3: The large circular structures in the micrograph are cross-sections of what coiled tubules in the human testes?

Answer:

Semini ferrous tubules

Question 4: What is the human diploid number?

Answer:

46

Question 5: Which describes the cells at the end of meiosis 1?

Answer:

They cells are haploid (chromatid are connected at the centromere the cell is a haploid because it has half the original chromosome #), The homologous chromosomes are in separate cells ( 2 HC and a Homologous pair have separated and moved to new cells) Question 6: Which describes the cells at the end of meiosis when nondisjunction occurs during meiosis II?

Answer:

The homologous pairs are in separate cells, the cells are haploid

Question 7: Individual homologues align in the center of the cell

Answer:

Metaphase 2 Question 8: Which of the following are wild type characteristics of fruit flies?

Answer:

Red eyes, long/flat/oval wings, light brown bodies Question 9: Which of the following represents that correct order of the phases of mitosis?

Answer:

Prophase, metaphase, anaphase, telophase

Question 10: Homologues synapse

Answer:

Prophase 1 Question 11: Which organelle associated with spindle formation is lacking in plant cells but is present in animal cells?

Answer:

Centriole

Question 12: Chromosomes condense in 2 haploid nuclei

Answer:

Prophase 2

Question 13: Homologous chromosomes separate and move toward opposite poles of the cell during what phase of meiosis 1?

Answer:

Anaphase 1 Question 14: Dogs have 39 chromosomes in their gametes. How many chromosomes should they have in their normal body cells?

Answer:

78

Question 15: Sister chromatids separate

Answer:

Anaphase 2

Question 16: Chromosomes replicate

Answer:

Synthesis

Question 17: Select all of the following that are functions of mitosis.

Answer:

Growth and repair of body tissues, produce two daughter cells from one parent cell, produce daughter cells that are genetically indentical

Question 18: What do plant cells form to aid cytokinesis?

Answer:

Cell plate

Question 19: At the end of meiosis how many daughter cells are produces?

Answer:

4

Question 20: If a cell has 8 bivalents, how many chromatids are present?

Answer:

32

Question 21: Which is true about the chromosome content of gametes?

Answer:

It is half that of normal body cells.

Question 22: Gap 1

Answer:

The cell grows

Question 23: Bivalents attach to the kinetochore

Answer:

Prometaphase 1 Question 24: If crossing over occurred in one cell and not another, how would the two cells compare?

Answer:

Crossing over would increase the genetic diversity in one of the cells.

Question 25: What is true of daughter cells produced by meiosis?

Answer:

They participate in sexual reproduction, They contain half the number of chromosomes as the parent cell Question 26: What would occur if chromosomes did not line up in single file during metaphase?

Answer:

Chromosomes may not separate properly during anaphase.Question 27: In human females, germ-line cells that undergo meiosis are found in what organ?

Answer:

Ovaries

Question 28: What is a dihybrid cross?

Answer:

A dihybrid cross is the mating between organisms that have different alleles for 2 different genes of interest.