Unit 6 Biology Study Guide - LAB.TIPS (2022)

Unit 6 Biology Study Guide

Ilsa2016@Ilsa2016

May 2022 0 1 Report

Chromosomes that are the same in length, apperance, and types of genes

homolougous chromosomes

1 / 46

30 chromosomes

If an organism has 15 pairs of homologous chromosomes, how many chromosomes will each daughter cell have?

2 / 46

16 chromosomes

If a cell has 4 pairs of homologous chromosomes in metaphase of mitosis, how many chromosomes will there be in anaphase?

3 / 46

8 pairs

If a cell has 4 pairs of homologous chromosomes in metaphase of mitosis, how many homologous pairs will there be in anaphase?

4 / 46

It has doubled because it has replicated. Each nucleus contains half.

In a eukaryotic cell undergoing mitosis, how does the amount of DNA in a prophase nucleus compare with the amount of DNA in a telophase nucleus?

5 / 46

92 chromosomes

If a cell has 92 sister chromatids in prophase of mitosis, how many chromosomes will the cell have in anaphase?

6 / 46

92 chromatids

If a cell has 92 sister chromatids in prophase of mitosis, how many chromatids will the cell have in anaphase?

7 / 46

3 homologous pairs

A somatic cell has 6 chromosomes in metaphase. How many homologous pairs are there?

8 / 46

3 pairs

A somatic cell has 6 chromosomes in metaphase. How many homologous pairs would be present in each nuclei in telophase?

9 / 46

They have the complete number of chromosomes. 1/2 are from mom and 1/2 are from dad. (2n) There are homologous chromosomes. All phases have homologous chromsomes.

Why are all phases of mitosis considered diploid?

10 / 46

Yes. Different genes are turned on/off for different functions.

Do all cells have the same DNA? In terms of genes, what makes a skin cell different from a stomach cell?

11 / 46

It is cell suicide and no.

What is apoptosis? do cancer cells undergo apoptosis?

12 / 46

G1= organelles duplicated and growthSynthesis (S phase)= DNA replicatedG2= Cell checks for duplication errors. Will go through apoptosis if there are errors and it is not a cancer cell. More growth.

(Video) [New Specification] IAL Edexcel Biology Unit 6 | ALL CORE PRACTICALS EXPERIMENTS in UNDER 10 MINS

What is happening in each sub phase of Interphase?

13 / 46

It uses mitosis.

When an amoeba reproduces, it makes an exact copy of itself. This is called asexual reproduction. Which process does the ameba use?

14 / 46

Fertilization

The meeting of the egg and the sperm is called...

15 / 46

Mitosis

Once the new fertilized egg is formed, it will go through which process is to grow into a fully developed individual?

16 / 46

It means that a certain part of the DNA is mot used to make the cell or help with the function.

What does it mean when we say a gene is "not expressed" or "turned off"?

17 / 46

It is when the homologous chromosomes or sister chromatids don't separate correctly.

What is nondisjunction?

18 / 46

It can take place in meiosis 1 or meiosis 2. Meiosis one is more dangerous.

When can nondisjunction take place during meiosis?

19 / 46

(N+1), (N+1), (N-1), (N-1)

If disjunction takes place in meiosis one with 4 chromosomes (2 homologous pairs), what would be the products?

20 / 46

(N), (N), (N+1), (N-1)

If disjunction takes place in meiosis two with 4 chromosomes (2 homologous pairs), what would be the products?

21 / 46

It would be Meiosis 1.

If there is (N+1), (N+1), (N-1), (N-1), would it be meiosis 1, meiosis 2, either, or both?

22 / 46

The side of the cell that the homologous pairs line up on create different combinations. Maternal and Paternal chromosomes randomly assort on either of the cell midline. Gametes have different combinations. Two equally probable arrangements at metaphase 1 that give rise to different chromosome combinations.

What are two ways in which meiosis increases genetic variation?

24 / 46

Diploid: 2n homologous chromosomesHaploid: n and no homologous chromosomes

What is the difference between a diploid and a haploid cell?

25 / 46

2n and homologous chromosomes

Diploid:

26 / 46

N and no homologous chromosomes

Haploid:

27 / 46

(Video) [LAST MINUTE] IAL Edexcel Unit 6 Biology Revision (Part 1)

Mitosis

Does mitosis or meiosis create identical daughter cells?

28 / 46

Meiosis

Does mitosis or meiosis create genetically different daughter cells?

29 / 46

Mitosis creates identical daughter cells for somatic cells and meiosis creates non-identical and genetically diverse sex cells. Half chromosomes from mom and half from dad in meiosis.

contrast the purposes/products of mitosis and meiosis in sexually-reproducing organisms.

30 / 46

Body cells (skin cells, leaf cells, zygote, liver cells, etc.)

Somates

31 / 46

sex cells (sperm and egg)

Gametes

32 / 46

11 cells

A cucumber has 22 chromosomes in its body cells. How many chromosomes would be in its gametes?

33 / 46

11 c.

A cucumber has 22 chromosomes in its body cells. How many chromosomes will be in its sperm cells?

34 / 46

22 cells

A cucumber has 22 chromosomes in its body cells. How many chromosomes will be in its leaf cells?

35 / 46

22 c.

A cucumber has 22 chromosomes in its body cells. How many chromosomes will be in its zygote cells?

36 / 46

BL, Bl, bL, bl

If there is a chromosome with B L and B L and other chromosome with b l and b l, what gametes would be produced in crossing over?

37 / 46

D: There are 20 sister chromatids per cell in G2.

If the sperm of an animal contains 5 chromosomes, what is true?A.The animal normally has 5 chromosomes in its body cells.B.Each sperm cell contains 10 sister chromatids.C.The animal's cells normally contain 10 homologous chromosome pairs.D.There are 20 sister chromatids per cell in G2 phase.

38 / 46

Prophase 1

During meiosis, when does crossing over occur?

39 / 46

False

True/False: Many eggs from the same human woman will be genetically identical to each other.

40 / 46

C.sister chromatids separate

Which of the following happens during both meiosis and mitosis?A.crossing overB.random alignment of homologous chromosomes.C.sister chromatids separateD.homologous chromosomes seperate

41 / 46

80 sister chromatids

A cell has 40 chromosomes during G1 phase. How many sister chromatids does that cell have during prophase I of meiosis?10, 20, 40, or 80?

(Video) AP Biology Unit 6 Gene Regulation and Expression COMPLETE REVEIW

42 / 46

Mitosis makes genetically identical copies; meiosis does not.

The main difference between meiosis and mitosis is that...

43 / 46

There are 4 chromosomes per cell after meiosis 1

If a normal diploid cell has 8 chromosomes, then...

44 / 46

Sister Chromatids

Suppose that a cell is unable to replicate its DNA. Which of the following would NOT be present in this cell?Sister chromatids, DNA, genes, or homologous chromosomes?

45 / 46

A and C are homologous

Chromosomes A contains genes for an eye color of hazel. Chromosome B contains genes for hair color of hazel, and chromosome C contains genes for an eye color of blue. Which statement is true?Chromosomes A+b homologous, b and c are homologous, a and c are homologous, or none of the chromosomes are homologous to one another.

46 / 46

Hover again to see term

PreviousNext

Terms in this set

Chromosomes that are the same in length, apperance, and types of genes

homolougous chromosomes

30 chromosomes

If an organism has 15 pairs of homologous chromosomes, how many chromosomes will each daughter cell have?

16 chromosomes

If a cell has 4 pairs of homologous chromosomes in metaphase of mitosis, how many chromosomes will there be in anaphase?

8 pairs

If a cell has 4 pairs of homologous chromosomes in metaphase of mitosis, how many homologous pairs will there be in anaphase?

It has doubled because it has replicated. Each nucleus contains half.

In a eukaryotic cell undergoing mitosis, how does the amount of DNA in a prophase nucleus compare with the amount of DNA in a telophase nucleus?

92 chromosomes

If a cell has 92 sister chromatids in prophase of mitosis, how many chromosomes will the cell have in anaphase?

92 chromatids

If a cell has 92 sister chromatids in prophase of mitosis, how many chromatids will the cell have in anaphase?

3 homologous pairs

A somatic cell has 6 chromosomes in metaphase. How many homologous pairs are there?

3 pairs

A somatic cell has 6 chromosomes in metaphase. How many homologous pairs would be present in each nuclei in telophase?

They have the complete number of chromosomes. 1/2 are from mom and 1/2 are from dad. (2n) There are homologous chromosomes. All phases have homologous chromsomes.

Why are all phases of mitosis considered diploid?

Yes. Different genes are turned on/off for different functions.

Do all cells have the same DNA? In terms of genes, what makes a skin cell different from a stomach cell?

It is cell suicide and no.

What is apoptosis? do cancer cells undergo apoptosis?

G1= organelles duplicated and growthSynthesis (S phase)= DNA replicatedG2= Cell checks for duplication errors. Will go through apoptosis if there are errors and it is not a cancer cell. More growth.

What is happening in each sub phase of Interphase?

It uses mitosis.

When an amoeba reproduces, it makes an exact copy of itself. This is called asexual reproduction. Which process does the ameba use?

Fertilization

The meeting of the egg and the sperm is called...

Mitosis

Once the new fertilized egg is formed, it will go through which process is to grow into a fully developed individual?

It means that a certain part of the DNA is mot used to make the cell or help with the function.

What does it mean when we say a gene is "not expressed" or "turned off"?

It is when the homologous chromosomes or sister chromatids don't separate correctly.

What is nondisjunction?

(Video) AQA GCSE Biology only - Unit 6 - Inheritance, Variation and Evolution (TRIPLE) - Recall Questions

It can take place in meiosis 1 or meiosis 2. Meiosis one is more dangerous.

When can nondisjunction take place during meiosis?

(N+1), (N+1), (N-1), (N-1)

If disjunction takes place in meiosis one with 4 chromosomes (2 homologous pairs), what would be the products?

(N), (N), (N+1), (N-1)

If disjunction takes place in meiosis two with 4 chromosomes (2 homologous pairs), what would be the products?

It would be Meiosis 1.

If there is (N+1), (N+1), (N-1), (N-1), would it be meiosis 1, meiosis 2, either, or both?

It would be Meiosis 2.

If there is (N), (N), (N+1), (N+1), would it be meiosis 1, 2, either, or both?

The side of the cell that the homologous pairs line up on create different combinations. Maternal and Paternal chromosomes randomly assort on either of the cell midline. Gametes have different combinations. Two equally probable arrangements at metaphase 1 that give rise to different chromosome combinations.

What are two ways in which meiosis increases genetic variation?

Diploid: 2n homologous chromosomesHaploid: n and no homologous chromosomes

What is the difference between a diploid and a haploid cell?

2n and homologous chromosomes

Diploid:

N and no homologous chromosomes

Haploid:

Mitosis

Does mitosis or meiosis create identical daughter cells?

Meiosis

Does mitosis or meiosis create genetically different daughter cells?

Mitosis creates identical daughter cells for somatic cells and meiosis creates non-identical and genetically diverse sex cells. Half chromosomes from mom and half from dad in meiosis.

contrast the purposes/products of mitosis and meiosis in sexually-reproducing organisms.

Body cells (skin cells, leaf cells, zygote, liver cells, etc.)

Somates

sex cells (sperm and egg)

Gametes

11 cells

A cucumber has 22 chromosomes in its body cells. How many chromosomes would be in its gametes?

11 c.

A cucumber has 22 chromosomes in its body cells. How many chromosomes will be in its sperm cells?

22 cells

A cucumber has 22 chromosomes in its body cells. How many chromosomes will be in its leaf cells?

22 c.

A cucumber has 22 chromosomes in its body cells. How many chromosomes will be in its zygote cells?

BL, Bl, bL, bl

If there is a chromosome with B L and B L and other chromosome with b l and b l, what gametes would be produced in crossing over?

D: There are 20 sister chromatids per cell in G2.

If the sperm of an animal contains 5 chromosomes, what is true?A.The animal normally has 5 chromosomes in its body cells.B.Each sperm cell contains 10 sister chromatids.C.The animal's cells normally contain 10 homologous chromosome pairs.D.There are 20 sister chromatids per cell in G2 phase.

Prophase 1

During meiosis, when does crossing over occur?

False

True/False: Many eggs from the same human woman will be genetically identical to each other.

C.sister chromatids separate

Which of the following happens during both meiosis and mitosis?A.crossing overB.random alignment of homologous chromosomes.C.sister chromatids separateD.homologous chromosomes seperate

80 sister chromatids

A cell has 40 chromosomes during G1 phase. How many sister chromatids does that cell have during prophase I of meiosis?10, 20, 40, or 80?

Mitosis makes genetically identical copies; meiosis does not.

The main difference between meiosis and mitosis is that...

There are 4 chromosomes per cell after meiosis 1

If a normal diploid cell has 8 chromosomes, then...

Sister Chromatids

Suppose that a cell is unable to replicate its DNA. Which of the following would NOT be present in this cell?Sister chromatids, DNA, genes, or homologous chromosomes?

A and C are homologous

Chromosomes A contains genes for an eye color of hazel. Chromosome B contains genes for hair color of hazel, and chromosome C contains genes for an eye color of blue. Which statement is true?Chromosomes A+b homologous, b and c are homologous, a and c are homologous, or none of the chromosomes are homologous to one another.

Videos

1. AP Bio Exam Review Unit 6 Gene Expression and Regulation
(Ashley Crisp)
2. REB | S5 | Biology | Unit 6| Lesson: The Genetic Code
(REB elearning)
3. AP Biology Unit 6: Gene Expression and Regulation
(Valerie May)
4. AP Bio Unit 6 Review Video - Gene Expression and Regulation
(John Gibney)
5. IGCSE BIOLOGY - PAPER 6 - Ultimate Guide !
(Ahmad Adam)
6. What Is Idiopathic Hypersomnia? - Prof. Yves Dauvilliers , Idiopathic Hypersomnia Education Day.
(Hypersomnolence Australia)

You might also like

Latest Posts

Article information

Author: Terrell Hackett

Last Updated: 08/08/2022

Views: 6030

Rating: 4.1 / 5 (72 voted)

Reviews: 87% of readers found this page helpful

Author information

Name: Terrell Hackett

Birthday: 1992-03-17

Address: Suite 453 459 Gibson Squares, East Adriane, AK 71925-5692

Phone: +21811810803470

Job: Chief Representative

Hobby: Board games, Rock climbing, Ghost hunting, Origami, Kabaddi, Mushroom hunting, Gaming

Introduction: My name is Terrell Hackett, I am a gleaming, brainy, courageous, helpful, healthy, cooperative, graceful person who loves writing and wants to share my knowledge and understanding with you.