What will be the sex ratio in the offspring of a cross

Assignment Help Biology
Reference no: EM137010

Q1. In birds, sex is determined by the ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons. What will be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?

Q2. A mammal uses only one to two percent of its energy in ventilation as a fish must spend about 15 percent of its energy to move water over its gills. Explain this huge difference in their efforts to collect oxygen.

Reference no: EM137010

Questions Cloud

Yolandas frozen yogurt : Demand curve is d1, what will be the change in her revenue. If her demand curve is d2 what will be the change in her revenue.
The organism lacks krebs cycle and electron transport chain : An organism is discovered that consumes a considerable amount of sugar, yet does not gain much weight when denied air. Curiously, the consumption of sugar increases as air is removed from the organism's environment, but the organism seems to thrive e..
Calculation of the unemployment rate : Calculation of the unemployment rate and part time workers who would prefer to work full time.
Return for stock : Evaluate the U.S. nursing shortage in terms of demand and supply.
What will be the sex ratio in the offspring of a cross : A mammal uses only one to two percent of its energy in ventilation as a fish must spend about 15 percent of its energy to move water over its gills. Explain this huge difference in their efforts to collect oxygen.
If they are linked, how many map units are they apart : Most people with Broca's aphasia suffer from partial paralysis on the right side of body. Most people with Wernicke's aphasia do not. Why.
Examine the f1 offspring from this cross : The idea is that this arrangement will allow animals and plants to migrate between refuges. Why would such migration be significant. Examine the F1 offspring from this cross.
Illustrate the structure of ATP and GTP. : In extracellular recording of Action potential, why is signal that reach the second electrode become reverted. Describe TWO specific cellular processes that require ATP andexplain how ATP is used in eachprocess.
The consequences of such mistakes during the process : Using the knowledge of DNA replication, describe the mechanisms in place for preventing mistakes during the process. Also discuss how potential mistakes can happen? What would be the consequences of such mistakes during the process.

Reviews

Write a Review

Biology Questions & Answers

  Offer a hypothesis to explain this behaviour

In mid afternoon, they are on it's under surface, each caterpillar hanging by a few legs. Offer a hypothesis to explain this behaviour. How would you test it.

  Which genotype is probable for the father

Imagine that non disjunction occurred throughout the production of the egg cell that produced your dragon's baby and resulted in no sex chromosome in the sperm cell. How would this change phenotype of your dragons' baby? Be exact for each trait that ..

  Assume that alternative alleles of single gene are involved

At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.

  Why mitochondrial function critical for growing on pyruvate

If the mutation is in mitochrondrial DNA, will the four haploid cells probably be all Pyr-, all Pyr+, or a combination? What if the mutation is in nuclear DNA. Why is mitochondrial function critical for growing on pyruvate.

  How is the human motor system organized

Describe the structure of atp and gtp. Describe how atp is produced during chemiosmosis. Illustrate two specific cellular processes that require atp and explain how atp is used in each process.

  Find out the effect environmental factor on photosynthesis

Plan a scientific experiment to find out the effect of this environmental factor on the rate of photosynthesis or cellular respiration in your chosen organism (reviews the scientific method, remember hypothesis, control so on.

  Which of the follow was necessary to confirming experiment

Which of the follow was necessary to this confirming experiment. Phosphorus is not present in amino acids in the protein coat of phage.

  Which construct of the health belief model

Why does some scientist think that areas protected from the otmosphere might have favoured the production of organic compounds on early earth.

  Describe 2 types of natural selection

After a long scuba diving session on a Caribbean reef, David boards a plane to Denver. He begins to feel pain in his elbows on a flight back home to Denver.

  How various molecules does one mole of table sugar

In maize, a dominant allele (A) is essential for seed color as opposed to colorless (a). Another gene has a recessive allele (w) which results in waxy starch, as opposed to normal starch (W).

  What is the broad sense heritability for milk

The F1 generation, which resulted from cross between the two lines, has a mean of 135kg and a variance of 16kg. What is the broad sense heritability (H2) for milk yield in this population.

  Which compounds protects the liver and other vital organs

The idea is that this arrangement will allow animals and plants to migrate between refuges. Why will such migration be important. Which of the compounds that normally protects the liver and other vital organs.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd