Answered: a)Draw a lily pollen grain in anaphase…

a)Draw a lily pollen grain in anaphase of meiosis II. b)How many gametes (sperm) will be in the pollen grain when it is complete

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter11: Meiosis And Sexual Reproduction

Section: Chapter Questions

Problem 10RQ: Which statement best describes the genetic content of the two daughter cells in prophase II of...

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Concept explainers

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:

Question

a)Draw a lily pollen grain in anaphase of meiosis II.

b)How many gametes (sperm) will be in the pollen grain when it is complete

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A) At the end of meiosis I, how many chromosomes are in each cell? B) Are the cells haploid or diploid? C) Are the chromosomes of the meiosis I products replicated or nonreplicated? D) During which phase in meiosis I would crossing over have occurred?
A) Hoe many cells are produced by the end of meiosis II? B) Are the cells produced at the end of meiosis II haploid or diploid? C) Are the chromosomes of the four final meiotic products replicated or nonreplicated?
10) At what point during meiosis is the ploidy of the cell reduced by half? A) During Metaphase I B) During Metaphase II C) By the end of Telophase I D) By the end of Telophase II
Phases of meiosis Anaphase I a) Homologous pairs separate. b ) Chromosomes are still double.
The four daughter cells pictured below resulted from: A) normal mitosis B) fertilization with a normal sperm C) normal meiosis D) meiosis with nondisjunction during meiosis I E) meiosis with nondisjunction during meiosis II
Sister chromatids separate during A) metaphase of meiosis I. B) anaphase of meiosis II and anaphase of mitosis C) prometaphase of meiosis I D) prophase of meiosis I.
which of these could lead to the mistake evident in the karyotype? A) a failure of cytokinesis after meiosis I in gamete formation B) a nondisjunction in meiosis II in gamete formation C) crossing over in meiosis ! in gamete formation D) fertilizaton by two sperm in zygote formation
The tight connection between two sister chromatids that is present in the centromere region is not broken until which phase in meiosis? a) anaphase of meiosis II b) anaphase of meiosis I c) prophase of meiosis II d) prophase of meiosis I e) metaphase of meiosis II f) metaphase of meiosis I
The diagram below shows a cell during Meiosis II: a) What phase of Meiosis II is the cell in? How do you know? b) Assuming all of the chromosomes present during Meiosis II are shown in the figure above, how many chromosomes (counting homologous pairs as two chromosomes) does a gamete from this organism have? c) Draw the same cell during the same phase of Meiosis I. Label the elements
For every one cell that goes through meiosis I and meiosis I| a)four haploid sperm or four haploid eggs are produced. b)four haploid sperm or one haploid egg are produced. c)four haploid sperm or one diploid egg are produced. d)two diploid sperm or two diploid eggs are produced
Phases of meiosis Metaphase I a) Tetrads line up on cell’s equator.
How do cells after meiosis compare with cells that are in the prophase of meiosis I?A) The cells have half the number of chromosomes and one-fourth the amount of DNA.B) The cells have the same number of chromosomes and half the amount of DNA.C) The cells have half the number of chromosomes and half the amount of DNA.D) The cells have half the amount of cytoplasm and twice the amount of DNA.