Question

if an allele is dominant, then: a. one allele can mask the expression of a recessive...

if an allele is dominant, then:

a.

one allele can mask the expression of a recessive allele in a hybrid.
b.

its phenotype is expressed only in homozygous individuals..
c.

its phenotype is only expressed in heterozygous individuals.
d.

its phenotype is more beneficial than the recessive phenotype.
e.

its phenotype is always expressed in all generations.
Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

An allele is the different form of a gene (which is the one member of a pair) that is located at a particular position on a specific chromosome. They are of two types, one is dominant and another one is recessive. There are three combinations are possible for them:

DD, DR, RR

DD and RR found only in homozygous individuals and DD express the phenotype of the dominant allele and RR express the phenotype of recessive allele only.

DR only in heterozygous individuals, in this case, the phenotype of the dominant allele is expressed.

Based on the above statement:

We can say that the option (e) is the correct statement.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Assuming a straightforward dominant/recessive relationship, what makes an allele “dominant” to the other one? If you...
Assuming a straightforward dominant/recessive relationship, what makes an allele “dominant” to the other one? If you were trying to determine which of two alleles for a particular gene was dominant, what kind of individual could you look at to answer this? (For example, if you had three individuals, one homozygous for Allele 1, one heterozygous, and one homozygous for Allele 2, which would be most helpful?)
Which of these statements best describes a recessive allele? A. The allele that is abnormal B....
Which of these statements best describes a recessive allele? A. The allele that is abnormal B. The allele that shows its effect in both homozygous and heterozygous states C. The allele that is less prevalent in the population D. The allele that shows its effect on phenotype only in homozygous state
1 For any gene with a dominant allele ‘ R’ and recessive allele ‘r ‘ (a)...
1 For any gene with a dominant allele ‘ R’ and recessive allele ‘r ‘ (a) Show the genotype of the offspring from a cross between RR and Rr (b) What proportions of the offspring are expected to be homozygous dominant, homozygous recessive and heterozygous?
Concept map the following terms: genotype, phenotype, allele, DNA, gene, recessive, dominant, heterozygous, homozygous.
Concept map the following terms: genotype, phenotype, allele, DNA, gene, recessive, dominant, heterozygous, homozygous.
3) In general, p = allele frequency of the dominant allele and q = allele frequency...
3) In general, p = allele frequency of the dominant allele and q = allele frequency of the recessive allele. Using the product and/or sum rule(s), use these variables (p and q) to determine the probabilities of an individual in the next generation being: a) Homozygous dominant (A dominant allele (A) AND another dominant allele (A))? b) Homozygous recessive (A recessive allele (a) AND another recessive allele (a))? c) Heterozygote (Aa OR aA)? 4a) In a population in Hardy-Weinberg equilibrium,...
In guinea pigs, the allele for black coat color (B) is dominant over the allele for...
In guinea pigs, the allele for black coat color (B) is dominant over the allele for white coat color (b). In an ideal mouse population exhibiting Hardy–Weinberg equilibrium of 31 guinea pigs, 2 are homozygous dominant, 11 are heterozygous, and 18 are homozygous recessive. What is the frequency of the recessive allele in the population? Show all work. A. 0.88 B. 0.12 C. 0.76 D. 0.64   
In a cross between dihybrids for genes that each have a dominant allele and a recessive...
In a cross between dihybrids for genes that each have a dominant allele and a recessive allele, what proportion of the progeny would be homozygous recessive for all the genes involved? A. 1/32 B. 1/16 C. 1/8 D. 1/4 E. 1/2 D.
1) One parent has yellow flowers, which is the dominant allele Y. The second parent has...
1) One parent has yellow flowers, which is the dominant allele Y. The second parent has white flowers, the recessive allele y. If the offspring are all yellow, what is the genotype of each parent? 2) A plant is homozygous for the recessive gene "a" causing the plant to be short. What is the genotype and the phenotype of this plant? (In your answer, be very clear about which is the genotype and which is the phenotype). 3) The allele...
The expression of yellow petals in sunflowers is due to the dominant allele Y. The homozygous...
The expression of yellow petals in sunflowers is due to the dominant allele Y. The homozygous recessive (y) has orange petals. Plant height is controlled by another gene with two alleles, T and t, with Tall (T) being dominant to short (t). Two individuals that are heterozygous for both traits are crossed, the number of offspring of each phenotype is recorded in the table below. 1. The assumption is that these two genes assort independently. To test this, complete a...
a) Are recessive alleles always more common than dominant alleles? b) Explain why the Osteogenesis imperfecta...
a) Are recessive alleles always more common than dominant alleles? b) Explain why the Osteogenesis imperfecta (OI) allele is rare even though the (OI) allele is a dominant trait which means only one copy is necessary to show the disease phenotype?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT