1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
krek1111 [17]
3 years ago
7

Explain how a testcross can provide evidence for or against linkage.

Biology
1 answer:
MrRa [10]3 years ago
7 0

Answer:

Testcrosses clarify linkage because each phenotypic class of progeny corresponds to each gamete type produced by the dihybrid parent.

Explanation:

  • A test cross involves the crossing of an individual with another phenotypically recessive individual so as to determine the zygosity of the former by analyses of the proportions of offspring phenotypes.
  • In order to determine linkage, the test cross shows that if the parentals are more than the recombinants, we can say that the two genes such as b and c  are genetically linked and therefore, they must be on the same chromosome.
  • Also, the test-crosses help to find out which alleles came from which parent.
  • By setting up testcrosses in which one parent is homozygous for the recessive alleles of both genes,we can analyze the gene combinations received in the gametes from the other, doubly heterozygous parent.
You might be interested in
The total amount of exchangeable air is known as ________.
Rudiy27
It would be the vital capacity 
5 0
3 years ago
Como aseguramos que en la mitosis la nueva célula es idéntica a la célula madre ?!!!
lozanna [386]

Answer:

The daughter cells are genetically identical because mitosis is a process that ensures the equal distribution of the replicated genetic material between these cells

Explanation:

During mitosis, the DNA is duplicated during the interphase (S-phase). Subsequently, the replicated chromosomes are arranged in the center of the parent cell (metaphase) to be finally separated and equally distributed between the daughter cells.

8 0
3 years ago
How many millimeters of water would be displaced by 48 g of lead
Lesechka [4]
Ok let do the formula. V=m/d=408/11.34= 35.98 v=35.98ml so ther is 35.98 ml place in a lead hope u love my answer
3 0
3 years ago
How does diploidy help to preserve genetic variation? see concept 23.4 (page 498)?
mario62 [17]
Monoploid organisms reproduce asexually since they need to transmit all of their genetic material to their offspring. Diploid organisms, have 2 copies of their genetic material that differ slightly in their genes. Since the progeny gets half of the DNA from each parent, we have that new combinations can emerge; for example, if the mother is AA for some allele and the father aa, their offspring will be Aa, a new genotype. This might have different implications (for example, the recessive gene for thalassemia also provides resistance to malaria). Finally, during meiosis, there is also an event called crossover that increases the genetic variation of the offspring.
3 0
3 years ago
The tyres of tractor are wide and large .Give reason.​
tangare [24]

Maybe this is the answer

3 0
1 year ago
Other questions:
  • which of the following is true biased thinking promotes scientific ideas open - restricts scientific thinking creativity Foster
    12·2 answers
  • Which blow from west to east, following the boundary between hot and cold air?
    13·2 answers
  • As streams flow through Stone Mountain, layers of sand build up. Over time, the sand particles form a sedimentary rock called sa
    14·2 answers
  • Describe the motion of air particles inside an inflated balloon
    5·1 answer
  • Where would you most likely find transform boundaries on an earthquake distribution map?
    9·2 answers
  • PLEASE HELP :,,,,,,,,)
    14·2 answers
  • A niche is part of an organism's habitat.<br><br> True or False?
    8·2 answers
  • What is being transferred by the wave above ?
    13·1 answer
  • How can you use what you know about chemical reactions to explain what happens to food molecules when you eat?
    15·1 answer
  • Chloe explains to Jordan the importance of photosynthesis in an ecosystem. Which sentences should she use in her explanation?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!