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Genetics And Evolution - Biology Questions asked by Filo students

Question 1

Q.8. What is the significance of histones in DNA packaging ? Ans. Histones are basic proteins. These proteins provide core to ac TA for winding/coiling. These proteins, thus help in making the struc

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Genetics and Evolution

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Question 2

Fig. Incomplete dominance in Mirabilis jala Q.5. Explain the chromosomal theory of linkage. Ans. Chromosomal theory of linkage was produced by main points of this hypothesis are : 1. Linked genes are found on a chromosome. 2. The strength of linkage depends upon the distance bet

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Genetics and Evolution

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Question 3

Generte code shows the inter-relationsnip of all of the given except

Nuoleotide sequence in DNA
Nucleotide sequence in mRNA
Amino acid sequence in polypeptide chain
Nucleoside sequence in DNA

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Genetics and Evolution

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Question 4

Who got the experimental proof of double hellcal structure of DNA?

Watson
Wilkins
Rosalind Franklin
Both (2) and (3)

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Genetics and Evolution

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Question 5

Why DNA is better to store genetic information as compared to RNA?

Helical structure of DNA
Undergoes slow mutation
Structurally stable
Both (2) and (3)

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Genetics and Evolution

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Question 6

Unwinding of double helix of DNA is catalysed by helicase and is dependent upon

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Genetics and Evolution

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Question 7

Which two loops of t-RNA have samo number of unpaired bases?

DHU and antioondon loop
Amticodon and Tu' $Cloop$
Anticodon and vartable loop

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Genetics and Evolution

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Question 8

When the colour blind male is married to carrier female, write the possibilities of female genotype:

$X^{e} X^{6}$
$X^{F} X^{C}$
$X^{5} X^{6}$ and $X^{\circ} x^{\circ}$
$X^{c} X^{c}$ and $X^{c} X^{c}$ .

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Genetics and Evolution

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Question 9

5^{'} A GCT A C 3^{'}

if promoter is prosent on left side of given 3'TCGATC 5' seq. (Ans

coding strand $5^{'} A GCT A G^{'}$ ' (Ans

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Genetics and Evolution

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Question 10

5^{'} A GCT A C 3^{'}

if promoter is prosent on left side of given 3'TCGATC 5' seq. (Ans

coding strand $5^{'} A GCT A G^{'}$ ' (Ans

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Genetics and Evolution

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Question 11

Biology (M.P.) : Class XII | 59 Q.6. Explain Law of independent assortment by taking example of a plant having Round and Yellow seed and wrinkled and green seed. Explain

F_{2}

generation plant with the help of checkerboard? (MP 2019)

Topic:

Genetics and Evolution

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Question 12

desire for copulation. Note :- In human, Perianal glands are absent. Ectopic pregnancy : Implantation of embryo on any site other than uterus. BEGINNER'S BOX-6 PREGNANCY, EMBRYONIC DEVELOPMENT, PLACENTA, PARTURITION 1. Three germ layers are formed during which stage of embryonic development :-

Morula
Blastula
Gastrula
In any two stages

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Genetics and Evolution

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Question 13

Pleiotropy and polygenic inheritance differ in 9. Spermatogenesis in

number of genes

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Genetics and Evolution

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Question 14

A segment of DNA molecule contains 20,000 base pairs. What is the number of phosphate molecule in this DNA molecule?

20,000
40,000
10,000
5,000

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Genetics and Evolution

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Question 15

Figure 6.14 The lac Operon Lactose is the substrate for the enzyme beta-galactosidase and it regulates switching on and off of the operon. Hence, it is termed as inducer. In the absence of a preferred carbon source such as glucose, if lactose is provided in the growth medium of the bacteria, the lactose is transported into the cells through the action of permease (Remember, a very low level of expression of lac operon has to be present in the cell all the time,

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Genetics and Evolution

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Question 16

Q. 4. Explain the following terms with example : (a) Co-dominance, (b) Incomplete dominance.

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Genetics and Evolution

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Question 17

help the DNA to condense it into chroma rative charged, phosphate group of DNA promote and guides the coiling of DNA Q.10. What is Chargaff's Rule? Ans. By Erwin Chargaff's

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Genetics and Evolution

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Question 18

Multiple Choice Questions Q1. How many types of gametes would be formed by a plant having genotype AA Bb CC?

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Genetics and Evolution

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Question 19

A husband and wife have normal vision but fathers of both of them were colour blind. Probability of their first daughter to be colour blind is

$25%$
$50%$
$75%$
$0%$

Topic:

Genetics and Evolution

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Question 20

A haemophilic man marries a normal homozygous woman. What is the probability that their son will be haemophilic?

$100%$
$75%$
$50%$
$0%$

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Genetics and Evolution

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Genetics And Evolution - Biology Questions asked by Filo students

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