1. The resemblances and the differences are due to heredity.
Ans. True.
2. Father and
mother contribute equal quantity of genetic material to the child.
Ans. True.
3. Recessive
character is the one which masks or hides its dominant partner.
Ans.
False. Dominant
character is the one which masks or hides its recessive
partner.
4. Chance of
the child being a male or female is 50 percent.
Ans. True.
5. All
children inherit ‘X’ chromosome from their father.
Ans.
False. All children
inherit ‘X’ chromosome from their mother.
6. In human
males two similar ‘Y’ chromosomes are present.
Ans.
False. In human males
two dissimilar chromosomes are present, longer
‘X’ and
shorter ‘Y’.
7. Sex
reversal is possible in all animals.
Ans.
False. Sex reversal
is possible only in certain fishes, amphibians and birds.
8. Organs
which are functionally similar but fundamentally unlike are called
homologous organs.
Ans.
False. Organs which
are functionally different but fundamentally similar
are called
homologous organs.
9. When F1 generation
plants undergo self pollination they give rise to second
filial
generation (F2).
Ans. True.
10. The sex
of the offspring is determined by the chromosome that they inherit
from their
mother.
Ans.
False. The sex of the
offspring is determined by the chromosome that they
inherit from
their father.
