Heredity and Evolution Test - 11

A) variation causes speciation.

B ) genetic drift cause variations.

C) male gamete contains male germ cell and is also called sex cell.

D) paleozoic arthropod is a trilobite.

A) Part of kale which is eaten is it's leaf.

B) Part of kohlrabi which is eaten is it's swollen stem.

C) Part of broccoli which is eaten is it's immature flowers.

D) Part of cabbage which is eaten is terminal overlapped buds.

A) genes are the primary unit of inheritance which are specific for specific individual.

B) factors are the traits which are transferred from parents to offsprings.

C) fossils are the dead remains of extinct species.

D) sex chromosomes decide the sex of an organism whereas autosomes decide the phenotypic expressions.

A) phenotype is the expressed physically visible trait in an organism.

B) genotype is the coding of the physically visible expressions.

C) dominant factor are the genotypes which express them in homozygous as well as heterozygous condition.

D) recessive factor are the genotypes which are not able to express them in heterozygous condition.

Hormones, proteins and enzymes are the result of specific gene sequences and different type of hormones, proteins and enzymes are secreted by varying gene codings.

Fats are combination of fatty acids and glycerol and is completely not a gene based secretion.

Mendel selected 14 different varieties of the pea and grouped them into seven pairs. Each pair was considered for a specific trait (characteristic) such as flower color or seed shape or stem length, etc. The two members of each pair showed contrasting forms of the chosen trait, ,e.g., in a pair selected for stem length, one variety had a tall stem (6-7 feet tall) while the other had a dwarf stem . These seven pairs of contrasting traits are shown in Table.

Gregor John Mendel is considered as father of genetics as he laid down the principles or laws of inheritance for the first time. Though his works were based on plants but the laws governing inheritance patterns are also applicable to humans and hence we call them as “ Mendel's Laws of Inheritance”.

Genetics is the study of genes, genetic variation, and heredity in living organisms. It is generally considered a field of biology, but intersects frequently with many other life sciences and is strongly linked with the study of information systems.

Mendel selected seven pairs of contrasting characters.  Plant Height,Pod Shape,Pod Color,Seed Shape,Seed Color and Flower Position.So flower shape and pod position not included here.

Charles Darwin listed a number of putative human vestigial features, which he termed rudimentary, in The Descent of Man (1890). These included the muscles of the ear, wisdom teeth, the appendix, the tail bone, body hair, and the semilunar fold in the corner of the eye.