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inysia [295]
3 years ago
7

If alleles of two different genes assort independently during gamete formation then what should be the phenotypic ratio in the F

2 generation according to Mendelian genetics?
Biology
1 answer:
Pepsi [2]3 years ago
6 0

Answer:

9:3:3:1

Explanation:

If alleles of two genes separate randomly during anaphase-I of meiosis, some new combinations of the alleles are formed in the gametes. A heterozygous genotype for two loci (let's support TtRr) produces a total of four types of gametes in 1:1:1:1 ratio (TR, Tr, tR, and tr). The random fusion of these gametes from two double heterozygous parents (TtRr x TtRr) gives a phenotype ratio of 9:3:3:1. Here, 9/16 F2 progeny exhibit dominant phenotype for both loci while 1/16 exhibits recessive phenotype for both the genes. Rest 3/16 and 3/16 F2 progeny express dominant trait for one gene and recessive for the other.

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What malfunction during meiosis is represented in the attached picture
FinnZ [79.3K]

Answer:

Non-disjunction

Explanation:

 

non-disjunction is occuring during anaphase I of meiosis I, this means that at least one pair of homologous chromosomes did not separate. The end result is two cells that have an extra copy of one chromosome and two cells that are missing that chromosome

fun facts:

(Nondisjunction occurs when chromosomes fail to segregate during meiosis; when this happens, gametes with an abnormal number of chromosomes are produced. The clinical significance is high: nondisjunction is the leading cause of pregnancy loss and birth defects)

6 0
4 years ago
List three changes of state during which energy is absorbed.
mote1985 [20]

The three changes of state during which energy is absorbed are:

1. Change from solid to liquid - Melting.

2. Change from liquid to gas - Vaporization

3. Change from solid to gas - Sublimation

All these changes of state require heat energy to break the attractive forces that hold the particles of the molecules together, so that they can move into more disorderly states. For instance, when heat is applied to a solid, the solid absorbs the heat and use it to break the attractive forces that are holding the molecules of the solid together. At a particular temperature, the attractive forces will be completely overcome and the solid framework will collapse, thus leading to the melting of the solid.

7 0
3 years ago
Read 2 more answers
What type of inheritance involves genes that segregate and assort independently?
Butoxors [25]

Mendelian inheritance involves genes that segregate and <u>assort independently</u>.

Independent Assortment- According to Mendel's law of independent assortment, the alleles of two or more distinct genes are separately selected into gametes. In other words, an allele with one gene doesn't really affect the allele for another gene that a gamete acquires.

Genes- The fundamental genetic component transferred from parent to kid. Genes are composed of <u>DNA </u>sequences and are organized sequentially at specified sites on chromosome in the cell nucleus.

DNA- The molecule found inside cells that carries the genetic material necessary for an organism to grow and operate. This knowledge may be handed down from one generations to the next thanks to DNA molecules.

To know more about the Independent Assortment, click on the below link.

brainly.com/question/13142132

#SPJ4

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Answer: smaller cell

Explanation:

8 0
3 years ago
Which of the following statements provides the best evidence that there is a common genetic code that demonstrates the unity of
wolverine [178]
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