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
Harrizon [31]
3 years ago
14

Having malformed hands with shortened fingers is a dominant trait controlled by a single gene; people who are homozygous for the

recessive allele have normal hands and fingers. Having woolly hair is a dominant trait controlled by a different gene; homozygous recessive individuals have normal, non-woolly hair. Suppose a woman with normal hands and non-woolly hair marries a man who has malformed hands and woolly hair. Their first child has normal hands and non-woolly hair. What are the genotypes of the mother, the father, and the child? If this couple are pregnant for a second time but with fraternal twins (two eggs/two sperm) what is the probability that they will both have normal hands and woolly hair?

Biology
1 answer:
ZanzabumX [31]3 years ago
6 0

If we name the gene for hands and fingers with A, the possible genotypes are Aa and AA for malformed hands with shortened fingers and aa for normal hands and fingers.

If we name the gene for hair with B, the possible genotypes are Bb and BB for woolly hair and bb for normal hair.

A woman with normal hands and non-woolly hair has a genotype aabb while her husband who has malformed hands and woolly hair might have AaBb, AaBB, AABb or AABB genotypes.

Since their first child has normal hands and non-woolly hair:aabb we can conclude that he inherited half of recessive alleles from mother, and other half from father. That means that father in his genotype contain both recessive alleles: AaBb

P: aabb x  AaBb

F1:  (table)

4/16 or ¼ is the possibility that one child will be with normal hands and woolly hair and ¼* 1/4 is the possibility that both of them will be with normal hands and woolly hair

You might be interested in
Mitosis and meiosis have all of the following in common except
GaryK [48]

Answer:

Mitosis and meiosis have parent cels that divide to produce daughter cells is false

5 0
3 years ago
Margaret, an elderly woman, needs to limit her kilocalorie intake without sacrificing needed nutrients. Keeping MyPlate in mind,
Ksju [112]

Answer:

Answer is B. Carefully select the food s rich in nutrients but low in calories.

Explanation:

Myplate is a kind of chart showing the amount of food to put in plate in order to stay healthy.

In Margaret situation, the best thing for her is to start selecting food items that are low in calories, and at the same time rich in nutrients. Because if she does not put the nutrients level in consideration, her health will be severely affected.

Some of the examples of foods that are low in calories and rich in nutrients are  fish, egg, oats,cabbage, popcorns, brocolli and fruits like apple and berries.

6 0
3 years ago
Select all that apply.
Naily [24]

Answer:

politics,imigration

Explanation:

welcome

6 0
3 years ago
Think about how the geologic time scale was created and how it is divided. Then answer the following questions.
katovenus [111]
The geologist time scale was formed when scientists studied rock layers and index fossils worldwide. With this information, they placed Earth's rocks in order by relative age. Later, radioactive dating helped determine the exact age of the divisons in the geologic time scale.

This scale is organized by the 4.6 billion years of earth's history into sections based on important changes seen in the geologic record. The largest intervals are called eons, with each eon containing many millions of years.

In precambarian time the processes that affect Earth's surface have lessened the erosion on the surface. Earth was being hit by meteorites every second. Now there is water erosion and there wasn't back then. The surface changes have lessened over time.
9 0
3 years ago
Read 2 more answers
What basic unit of heredity is found on segments of DNA and are passed on from parent to offspring?
marysya [2.9K]

Answer:

Genes

Explanation:

Genes are sequences of nucleotides that determine characteristics. They are passed from parents to offspring.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Norah observes some velvet-green growth on a tree trunk. When she picks up one of these plants, she notices that the plant has a
    7·2 answers
  • Which structure is correctly paired with its function?
    13·2 answers
  • What type of crust does rhyolitic magma form?
    13·1 answer
  • Cheetahs can run very fast in short distances. to do this, they need to use the energy from the food they have eaten. which part
    12·1 answer
  • Когда исчезнет человечества?
    13·1 answer
  • A controlled experiment measures the effect of one variable? True or false
    11·1 answer
  • during a long race one athlete did not drink any liquid towards the end of the race the amount of sweat he produced began to fal
    14·1 answer
  • No matter what the cell type, prokaryotic or eukaryotic, plant or animal, the ____________ forms a protective barrier between th
    11·1 answer
  • Four scientists collected data on the blood pressure of 30
    15·2 answers
  • The chief port of Ecuador is:<br><br> Quito<br> Guayaquil<br> Otavala<br> Cuenca
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!