Question

1. Who gave the chemical theory of origin of
life?
2. Who coined the term genetics and when?
3. What is genetics?
4. What do you understand by the term sex
determination?
5. From which plant is cauliflower evolved?
6. What type of structure has been proposed for
the DNA molecule?
7. What is artificial selection?
8. Between the characteristics of blue colour of
eyes and heavy weight, which one cannot be

Hi guys answer please​

Answer 1

1) Charles Darwin

2)William Bateson in 1905

3)Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms

4)A sex-determination system is a biological system that determines the development of sexual characteristics in an organism.

5)Brassica oleracea

6)Double helical structure

7)Artificial selection is the intentional reproduction of individuals in a population that have desirable traits.

Answer 2

1. Who gave the chemical theory of origin oflife?

• Bernal coined the term biopoiesis in 1949 to refer to the origin of life.
• In 1967, he suggested that it occurred in three "stages": the origin of biological monomers.

2. Who coined the term genetics and when?

• GREGOR MENDEL is known as the "Father of Genetics"..
• He discovered the laws of inheritance in pea plants and also that genes come in pairs.

3.What is genetics?

• genetics is a branch of science which deals with Dna , chromosomes and other genetic meterial a child gets from his parents .
• Genetics can be used to prevent numerous diseses such as cancer.

4. What do you understand by the term sexdetermination?

• A sex-determination system is a biological system that determines the development of sexual characteristics in an organism.
• Most organisms that create their offspring using sexual reproduction have two sexes.
• Occasionally, there are hermaphrodites in place of one or both sexes.

5. From which plant is cauliflower evolved?

• Cauliflower is one of several vegetables in the species Brassica oleracea in the genus Brassica, which is in the family Brassicaceae.

6. What type of structure has been proposed forthe DNA molecule?

• In its natural state, each DNA molecule is actually composed of two single strands held together along their length with hydrogen bonds between the bases.
• Watson and Crick proposed that the DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix.

7. What is artificial selection?

• Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.

8. Between the characteristics of blue colour ofeyes and heavy weight, which one cannot be.??

.

• In some parts of the world, green eyes are rarer than amber eyes or vice versa.
• Most people consider green to be the rarest eye color in the world, though many others consider amber to be even more unusual.
• Therefore, it's safe to say that either green or amber is the rarest color in the world.
• However, don't place too much weight on it.