Embibe Experts Solutions for Chapter: Principles of Inheritance and Variation, Exercise 1: TS EAMCET - 9 August 2021 Shift 2

Identify the scientists who rediscovered the Mendel's result on the inheritance of characters.

A) de Vries
B) Morgan
C) von Tschermak
D) Sutton

The ratio of long-winged and vestigial winged Drosophila are formed when a pure long-winged (dominant) and a pure vestigial winged (recessive) Drosophila are crossed:

Assertion (A) : If the allele produces a less functional enzyme or non-functional enzyme the phenotype may be affected.
Reason (R) : The phenotype trait will not be dependent on the functioning of the unmodified allele.

The correct option among the following is:

Study the following regarding genic balance theory of sex determination in Drosophila
I. Organism with $\mathrm{AAA} \mathrm{XXX}$ is fertile triploid female
II. Organism with $\mathrm{AAA} \mathrm{XXY}$ is fertile triploid male
III. Organism with $\mathrm{AAA} \mathrm{XX}$ is an intersex
IV. Organism with $\mathrm{AA} \mathrm{XXY}$ is metafemale
Which of the above are correct?

Assertion (A): In human beings, the sex of the offspring depends on the type of sperm that fertilizes the ovum
Reason (R): Human males are heterogametic
The correct option among the following is

Colour blindness in human beings is

Match the following:

The correct match is:

A woman (whose father is haemophilic and mother is homozygous normal) married a normal man and had two sons and two daughters. What are the chances of their sons being haemophilic?