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what is the difference between acquired and inherited traits ?
the extent of deviation of a ray of light on passing through a glass prism depends on its colour.
Why evolution should not be equated with "progress" ?
Genotypic ratio of dihybrid cross?
How do Mendel's experiments show that traits are inherited independently??
difference between inherited and acquired trait????
a trait may be inherited, but may not be expressed. justify this statement with the help of a suitable example.
Study the given data and answer the following questions.
PARENTAL PLANTS CROSS FERTILISED & SEED COLLECTED
F1(first generation of offspring)
F2 ( offspring of self pollination of F1)
Male parent always bore red flowers.
Female parent always had white
330 seeds sown and observed
All 330 gave red flowers
Out of 44 seeds 33 seeds gave plants with red flowers and 11 seeds gave plants with white flowers
1) What is the term for this type of cross?
2) What does the data of coloumn marked F1 indicate?
3) Express the genotype of a) parents b)F1 progeny and c)F2 progeny.
how are the areas of study - evolution and classification - interlinked?
How do mendel's experiment show that traits may be dominant or recessive ?
what are acquired traits? acquired traits are not capable of directing evolution justify bu 3 reasons.
Define artificial selection. Explain it with help of example.
why did mendel choose pea plant for his experiment?
Explain how characteristics (or traits) are inherited through genes?
difference between homologous and analogous organ?????
Evolution cannot be equated with progress . Explain
what do u mean by contrasting trait??
how fossils are formed? how we can determine the age of fossil ?
After the death of two insects, one of the insect was buried in hot mud and the other in usually found mud. Which of the two is more likely to be preserved better and why?
How is the sex of the child determined in human beings?
please draw the monohybrid and dihybrid cross of a plantand also tell genotypic and phenotypic ratio of the crosses??
What are Mendel's three laws of inheritance?
describe any three ways in which individuals with a particular trait may increase in population?
What are homologous and analogous organs in plant and animals? Please explain in breif with their pictures.
Two pink coloured flowers on crossing resulted in 1 red,2pink and 1 white flower progeny.The nature of the cross will be...
Variation is useful for the survival of species overtime but the variants have unequal change of survival.Explain this statement.
A man with blood group A marries a woman with blood group O and their daughter has blood group O.Is this information enough to tell you which of the traits --blood group A or O is dominant ?Why or Why not ?
What are the advantages and Disadvantages of Variation??
State the typr of plant not found in F1 generation but appeared in F2 generation, mentioning the reason for the same?
What is natural selection and genetic drift?
How are evolution and classification related?
what is speciation????????????
why is the progeny always tall when a tall pea plant is crossed with a short pea plant?
1) Law of Segregation
2) Law of Dominance
3) Law of Independent Assortment
A basket of vegetables contain carrot, potato, radish and tomato. Which of them represent the correct homologous structures?
a) Carrot and potato
b) Carrot and tomato
c) Radish and carrot
d) Radish and potato
Give reasons for the appearance of new combinations of charactersin the F
Give reasons for the appearance of new combinations of characters
in the F
an organic compound 'X' on heating with conc. H2SO4 fors a compound 'Y' which on addition of nickel forms a compound 'Z'.One molecule of compound One molecule of compound 'Z'on combustion forms two molecules of CO2 and three molecules of H2O.identify giving reasons the compound X ,Y, and Z. write a chemical for all the reactions involved.
which of the following traits cannot be passed on to the progeny?justify your answer?
1.rudimentary eyes of planaria.
2.absence of tail in a mouse(after surgical remove).
3.low weight of a starving beetle.
what is genetic drift and natural selection
in a tobacco plant the male gamete has 24 chromosomes. State the number of chromosomes in 1)egg nucleus 2)zygote 3)endosperm 4)leaf cell. PLEASE GIVE ME EXPLAINATION ALSO!!!!!!!!!!!
Question: The genotype of a plant bearing purple flowers is PP and with white flowers is pp. When there's two r crossed;
(a) what colour of flowers would u find in F1 progeny?
(b) give the percentage of white flowers if F1 plants r self fertilised
(c)In what ratio would you find the genotype PP and Pp in F2 progeny ? Draw flow chart in support of you answer.
Pls answer ASAP cos its really urgent
name the vegetable crop made from wild cabbage by artificial selection when farmers opted for :-
i)arrested flower development
iii)swollen parts of wld cabbage
what is the importance of DNA copying in reproduction?why is variations beneficial to the species but not necessary to an individual? explain
WHAT IS ANALOGOUS ORGAN IN PLANTS ?EXPLAIN WITH EXAMPLE.
what are homologous organs and anologous organs.? give example? how are they provides evidence in support of evolution??
Are the fins of fish and flippers of whale ,homologous or analogous?
Only variations that confer an advantage to an individual organism will survive in a population. Do you agree with this statement? Why and why not
what are the significance of reproduction?
A pea plant with tall plant and violet flowers (TtVV) were crossed to short plant with white flowers (ttvv). Find out the phenotypes and genotypes of offspring obtained as result of this cross.
give examples of acquired traits and inherited traits and mention the differences between them...
you have a basket of vegetable which contains carrot, potato, tomatto, ginger, radish, sweet potato. select two vegetable that represent currect homologous structure
a) potao and sweet potato
b)carrot and radish
c) potato and carrot
d) sweet potao and tomatto
(a) where are genes located?
(b) what is gene?
(c) what is the nature of genes?
1. What is the function of genes in an organism?
Sweet potato and potato are homologous organs or analogous organs.
what is the difference between evolution and speciation
kindly explain 1)Genetic Drift, 2)Gene Flow, 3)Natural Selection......How is Blood Group determined in humans????
why do the progeny of a tall plant with round seed and a short plant with wrinkled seed look like ? why?
why are traits acquired during the lifetime of an individual not inherited..
which of these belong to the homologous category...from a basket of fruits and vegetable....(potato , raddish , carrot , and tomato.)
a> potato and carrot
b. carrot and raddish
c. potato and raddish
d.tomato and potato
A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?
I know this is NCERT ques n its available on meritnation bt i dnt find full n gud ans der so pls help me out n ans of di ques plsss.............
3.1. In grasshoppers, the body color of brown is dominant over green. Also, having strong legs is dominant over having weak legs. A heterozygous brown, homozygous strong-legged male meets a heterozygous brown, homozygous weak legged female.
They produce a number of offspring. Complete the following.
a. Possible genotypes for Brown body color: ________ Green body color: _______
b. Possible genotypes for Strong legs: _________ Weak legs: _________
c. Male genotype: _____________ Male possible gametes: _______________
d. Female genotype: ___________ Female possible gametes: ______________
F1 generation and F2 Generation.
Is there any difference between heredity and inheritance?
A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as
Why cannot it be (D) TtWw ? Why is it WW?
What are vestigial organs and give some examples?? Also what are alleles??
What are variations ? How do they develop? Give their significance.
give examples of homologous organs in plants..??
What is rudimentary eye?
list three factors responsible for speciation.Describe each one of them?
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