Question

In: Biology

In humans, the allele for brown eyes (B) is dominant. The allele for blue eyes (b)...

In humans, the allele for brown eyes (B) is dominant. The allele for blue eyes (b) is
recessive. If a woman with genotype Bb and a man with genotype Bb have a child,
what will be the likelihood of the child having blue eyes?
a 0%
b 75%
c 50%
d 25%
e 100%
------------------------------
What would be the result of a cell that underwent mitosis but not cytokinesis?
a Two daughter cells with no nucleus
b One daughter cell with two nuclei, each containing a normal number of
chromosomes
c Two daughter cells that are unusually small
d Two daughter cells with twice the number of chromosomes
e One daughter cell with one nucleus containing twice the normal number of
chromosomes
---------------------------
What two processes are responsible for the transfer of information from genes to
proteins?
a respiration and translation
b translation and protein synthesis
c respiration and protein synthesis
d translation and mutation
e transcription and translation
--------------------
What is the function of the lysosomes?
a Packaging of proteins
b Digestion and waste removal
c Maintaining cell structure
d Production of energy
e Storage

Expert Solution

1 Let's answer it by the Punnet Square

Brown eyes colour is dominant over blue eyes colour so Brown eyes colour Will express in homozygous and heterozygous condition i.e. BB or Bb

B represents Brown eye colour and b represent blue eyes colour

The genotype of women is Bb which is Brown eye colour as there is one copy of the dominant gene and

The genotype of men is bb and it is a blue eye because no dominant gene is there and the condition is homozygous recessive

Bb x bb

	B	b
b	Bb	bb
b	Bb	bb

These results indicate that each 2 Brown eye and blue eye that means out of 4 so 50% child are blue eyes.

2. The cell which undergoes mitosis a cell division occurred in a somatic cell in different 4 steps namely Prophase, Metaphase, Anaphase and Telophase. Where the nucleus is divided bit not two daughter cells are formed it will only form after cytokinesis which is the last phase of cell division where 2 daughter cells formed by division of cytoplasm so the answer is option b rest of the option are incorrect as per explained above

3.

Option c is correct because in the first process.e transcription the information of DNA is copied in RNA and in the second process this information is translated into Protein this is called translation and it central dogma of molecular biology

4

The option b is correct

It is cell organelles which are mean for digestion and waste removal from the cell contain a digestive enzyme which can digest a different kind of the compound into the cell.

Other option

Protein packaging is Golgi bodies vesicles

The cell structure is maintained by the intracellular cytoskeleton

Energy production in mitochondria

Vacuoles are mean for storage

Thank you,

gladiator answered 6 months ago

QUESTION 1 In mice, an allele for brown eyes (B) is dominant over an allele for...

QUESTION 1 In mice, an allele for brown eyes (B) is dominant over an allele for apricot eyes (b). At an independently assorting locus, an allele for tan coat color (t) is recessive to an allele for black coat color (T). A mouse that is homozygous for brown eyes and black coat is crossed with a mouse having apricot eyes and a tan coat. The resulting F1 mice are crossed to produce the F2. a. Diagram the cross, including the...

Dimples is dominant over smooth cheeks, and brown eyes are dominant to blue. A blue-eyed woman...

Dimples is dominant over smooth cheeks, and brown eyes are dominant to blue. A blue-eyed woman with dimples (both her parents had brown eyes, her mother had dimples and her father had no dimples) marries a brown-eyed man with dimples (his father had blue eyes and dimples, his mother had brown eyes and no dimples). What is the probability that their first child will have blue eyes and dimples? a. 1/4 b. 1/2 c. 3/8 d. 3/4 e. 1/8

In humans, brown eye color (B) is dominant over blue (b) while right-handedness (R) is dominant...

In humans, brown eye color (B) is dominant over blue (b) while right-handedness (R) is dominant over left-handedness (r). A brown-eyed, right-handed man marries a blue-eyed, right-handed woman. Their first child is blue-eyed and left-handed. List the genotypes of the parents.

In dogs, the allele for black coat color (B) is dominant to the allele for brown...

In dogs, the allele for black coat color (B) is dominant to the allele for brown coat color (b). But if a dog has two copies of the recessive allele for a pigment-depositing gene (e), it can only have yellow coat color. In a cross of two doubly heterozygous black dogs (BbEe x BbEe), what fraction of the next generation would we expect to be yellow? WHY? a.1/8 b.1/4 c.2/3 d.3/16

In rabbits, black hair depends on a dominant allele, B. and brown on a recessive allele,...

In rabbits, black hair depends on a dominant allele, B. and brown on a recessive allele, b. Short hair is due to a dominant allele, S, and long hair to a recessive allele, s. A short, black haired male rabbit who is homozygous dominant for both traits is mated with a brown, long haired female a. Write the genotype (in letters) of both parents. b. Draw the Punnett square below illustrating the cross of the parental rabbits. c. What percentage...

A man and a woman both have brown eyes, but their first child has blue eyes. What...

A man and a woman both have brown eyes, but their first child has blue eyes. What are the chances that their second child will have blue eyes? Jane is blood type A and her husband is blood type B. Jane is puzzled because their daughter is type O. Explain how the daughter inherited a blood type neither of her parents has. Jim is blood type A and his mother is blood type O. What are the possible blood types of his father? (Three...

A certain type of congenital deafness in humans is caused by a rare dominant allele. In...

A certain type of congenital deafness in humans is caused by a rare dominant allele. In a mating involving a deaf man and a deaf woman, could all their children have normal hearing? a. Yes, because traits assort independently. b. No, because children favor their parents. c. No, because it is dominant. Children always get the dominant alleles. d. Yes, assuming that the parents are heterozygotes. e. Yes, because it must be recessive if it's rare.

Brachydactyly is a condition caused by an allele dominant to wild-type in humans, in which the...

Brachydactyly is a condition caused by an allele dominant to wild-type in humans, in which the fingers and toes are shortened. In a population of 10,000 people, 1,600 are BB, 4,800 are Bb, and 3,600 are bb. A)What percentage of people in this population have short fingers and toes? B)What is the frequency of the b allele? C)Is this population in Hardy-Weinberg equilibrium?

In mice the allele for black coat color (B) is dominant to the allele for white...

In mice the allele for black coat color (B) is dominant to the allele for white coat color (b). The allele for long tail (T) is dominant to the allele for short tail (t). For the same cross: BbTt x bbTt a. Using the Probability Method illustrated in lecture, break the complex two-gene cross into two simple single-gene crosses (note that the Probability Method can be used if it is known that the alleles of the different genes Assort...

(4 PTS) In humans the dominant allele N causes an abnormal shape of the patella in...

(4 PTS) In humans the dominant allele N causes an abnormal shape of the patella in the knee (n is the normal allele). A separate gene affects finger length, and the dominant allele B causes abnormally short fingers, whereas b gives normal length. A study focused on people who have both abnormal patellae and short fingers (they most likely have the genotype N/n B/b). They inherited the N allele from one parent and the B allele from the other parent. These N/n...