Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

problem 1) What are the two main causes of heritable variation?

problem 2) Classify the following variations as either

(i) caused entirely by genetic effects or                    

(ii) caused by a combination of genetic and environmental effects.

obesity, eye colour, tallness, ability to sing, maleness, masculinity, blood group, natural hair colour; sickle-cell anaemia, agility

problem 3) Alleles are genes which occupy corresponding positions on….. A ….. chromosomes. They control the same ….. B ….. but not necessarily in the same way.

problem 4)(a) What new combinations of characteristics might arise in the offspring when a tall plant with white flowers is crossed with a dwarf plant (of the same species) with red flowers?

(b) What selective advantage might either of the new varieties have?

problem 5) The genotypes of two guinea pigs, for two characteristics are  represented as AABB and aabb. These guinea pigs are mated, and their offspring eventually mate with each other.

(a) What genotypes could emerge in the second generation?

(b) Which of these would be phenotypically different (i.e. be different in appearance) from the original pair?

problem 6) Suppose that there are six pairs of alleles which control height and that each dominant allele adds 5cm to the stature. Suppose also that the average height of an adult (with equal numbers of recessive and dominant alleles) is 160cm

(a) What is

(i) the tallest,

(ii) the shortest person you would expect from this pattern?

(b) On this basis, what would be the minimum difference in height between any two people?

(c) Why is this minimum difference unlikely to be observed in reality?

problem 7) Give two exs in each case of (a) continuous, (b) discontinuous variation in human populations. 

problem 8) Which one of the following statements is the least accurate?

(a) Discontinuous variation results entirely from genetic differences.

(b) Continuous variation can result from genetic differences.

(c) Discontinuous variation cannot be altered by environmental effects.

(d) Continuous variation results from environmental effects.

problem 9) describe why identical twins will have the same genotype.

problem 10) When  ….. A ….. and …..  B ….. put forward the theory of Natural Selection in 1858 they observed that there are ….. C ….. between  the individuals of a species. They also observed that organisms produce more offspring than can possibly …. D …..to maturity. If the ….. E ….. are inherited and give the individuals an advantage over the other members of the species, they will live ….. F ….. and so leave more offspring with the same beneficial ….. G …..

Biology, Academics

  • Category:- Biology
  • Reference No.:- M95200

Have any Question? 


Related Questions in Biology

1 compare and contrast asexual and sexual reproduction2

1. Compare and contrast asexual and sexual reproduction. 2. Explain why both sexual and asexual reproductive strategies still exist (ie, why doesn't every organism reproduce sexually? Why doesn't every organism reproduce ...

Color vision gave our primate ancestors great advantages if

Color vision gave our primate ancestors great advantages. If color vision is an advantage, discuss how the condition of color-blindness still exists in humans today.

Dolly dolly and more dollyit all started with a sheep named

Dolly, Dolly, and More Dolly It all started with a sheep named Dolly. In the mid-1990s, scientists proved convincingly that after decades of trying, we could, indeed, clone mammals - and even possibly, human beings. Unsu ...

What are the characteristics of tropical waters temperate

What are the characteristics of tropical waters, temperate waters and polar waters?

Contrast the different types of stem cells including pros

Contrast the different types of stem cells, including pros and cons of each.

Question 1briefly explain the control of feeding by the

Question 1 Briefly explain the control of feeding by the hypothalamus. Question 2 Compare and contrast the functions of estrogen, testosterone and oxytocin in reproductive behavior. Question 3 What evidence shows that th ...

Focusing on thenbsprespiratory digestive urinary and

Focusing on the  respiratory, digestive, urinary, and reproductive systems.   Create a scenario  and give your patient a disease associated with any of these systems and present the history and symptoms of the particular ...

Essay - immunizationsthe biology concepts presented in this

Essay - Immunizations The biology concepts presented in this course are taught in a way that encourages you to make the connection between textbook biology and biology that appears in newspapers and periodicals. This ass ...

Explain the hierarchy of plant structure using the root as

Explain the hierarchy of plant structure using the root as an example organ and follow it through each stage until you reach the level of cell. Only use the vascular tissue systems.

1 a portion of a gene contains the following sequence

1. A portion of a gene contains the following sequence: GAAGGAGTAGCA. After transcription, it gives the mRNA sequence: CUUCCUCAUCGU, which is then translated to the amino acid sequence leucine-proline-histidine-arginine. ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro