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
Whitepunk [10]
3 years ago
12

Genes a and b are 10 map units apart, b and c are 20 map units apart, and a and c are 30 map units apart. If a triple heterozygo

te is testcrossed, among 1,000 progeny, how many are expected to result from double crossovers if there is no interference?
а. 10;
b. 20;
c. can't be determined
d. 30;
e. 60;
Biology
1 answer:
Stells [14]3 years ago
6 0

Answer:

20 ( B )

Explanation:

Given data:

a and b are 10 map units apart

b and c are 20 map units apart

a and c = 30 map units apart

<em>condition </em>; Triple heterozygote testcrossed

number of progeny = 1000

<u>Determine the number of double crossover result </u>

P( crossover between a and b ) = 10/100 = 0.1

P( crossover between b and c ) = 20/100 = 0.2

p( double crossover ) = 0.1 * 0.2 = 0.02

hence number of double crossovers = number of progeny * 0.02

                                                              = 1000 * 0.02 = 20

You might be interested in
29. Which cell component is most connected to your immune system?
yulyashka [42]

Answer:

cell membrane is the answer

4 0
3 years ago
Does the sand at night have less kinetic energy than the sand on a sunny day?​
STatiana [176]
Because the sun heats up the sand causing the atoms to move much faster than at night
6 0
3 years ago
Name the tissue that water travels up from the roots to shoots in a deciduous tree.
Leviafan [203]

The tissue that water travels up from the roots to shoots in a deciduous tree is xylem.

<h3>What is xylem?</h3>
  • Xylem is one among the two types of transport tissue in vascular plants, the opposite being phloem.
  • Transport water from roots to stems and leaves is the main function of xylem, but it also transports nutrients.
  • The word xylem springs from the Ancient Greek word ξύλον (xylon), meaning "wood"; the best-known xylem tissue is wood, though it's found throughout a plant. The term was introduced by Carl Nägeli in 1858.
  • The long tracheary elements are the most distinctive xylem cells that transport water. Tracheid and vessel elements are distinguished by their shape; vessel elements are shorter, and are connected together into long tubes that are called vessels.

To learn more about xylem: brainly.com/question/12813346

#SPJ4

5 0
2 years ago
g If a colony of bacteria starts with 1 bacterium and doubles in number every 20 ​minutes, how many bacteria will the colony con
Lynna [10]

Answer: 2.81 x 10∧14 baterias after 16 hours.

Explanation:

Hi, first we have to find how many 20 minute intervals are in 16 hours.

If 1 hour = 60 min, 16hours = 960 minutes (16 h x 60 min / 1 h)

If we divide the 960 minutes (16 hours) by 20 minutes we obtain 48. (960/48)

There are 48 twenty minutes intervals in 16 hours.

Now we have to apply the exponential growth formula:

P (t) = Po (1 +r) ∧t

Where:  

P (t) = population at time t  

P (0) = initial population (1)

r = growth rate (1)

t = time (48)

Replacing with the values given:

P (t) = 1 (1 + 1) ∧48= 2.81 x 10∧14

2.81 x 10∧14 baterias after 16 hours.

7 0
3 years ago
What controls traits and inheritance? gametes nucleic acids proteins temperature
kondor19780726 [428]

The answer would be B. Nucleic acids.

8 0
4 years ago
Read 2 more answers
Other questions:
  • The rules say that adenine will form a cross bridge bond with
    9·1 answer
  • WILL GIVE A BRAINLEST
    14·2 answers
  • 1. What is the acceleration due to gravity on Earth?—Answer must include number and its unit (This is a constant number used in
    11·1 answer
  • A population is defined as all of the inhabitants of a given country or area considered together.
    6·1 answer
  • What is the role of the spinlde fibers during the mitosis
    12·1 answer
  • Which type of transport is shown in the figure below?
    13·2 answers
  • Allele frequenies for a particular trait are shown over five generations for a population of sexually reproudcing organisms. Acc
    12·1 answer
  • Why are there so many different shaped beaks in finches
    15·2 answers
  • 1. )Which of the following would be classified as an acute disease condition?
    10·1 answer
  • Note: the sugar glucose produced by photosynthesis are used for two different purposes:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!